Investing gets much simpler when you focus on the long term. Instead of worrying about short-term market swings, the goal becomes owning businesses that can keep expanding, strengthening their competitive positions, and compounding earnings over many years.
With that mindset, I tend to look for companies operating in large markets with strong brands, scalable platforms, or structural tailwinds behind them.
Here are five ASX shares I'd be happy to buy and hold for the next decade.

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Sigma Healthcare Ltd (ASX: SIG)
Sigma has been transformed following its merger with Chemist Warehouse, creating one of the most powerful pharmacy groups in Australia.
The combined business brings together Chemist Warehouse's retail strength and brand recognition with Sigma's wholesale distribution and supply chain expertise. That combination gives the group enormous scale across both pharmacy retail and pharmaceutical distribution.
Chemist Warehouse already has a dominant position in the Australian pharmacy market and continues expanding internationally. With Sigma now integrated into the group, the merged business has the potential to unlock meaningful efficiencies and growth opportunities over time.
For long-term investors, I think the scale and brand strength of the Chemist Warehouse network make Sigma a very interesting business to watch over the coming decade.
REA Group Ltd (ASX: REA)
REA Group operates one of the most valuable digital platforms in Australia through realestate.com.au.
Property listings are a critical part of the real estate industry, and REA has built an incredibly strong position with both agents and buyers. When people search for property online in Australia, realestate.com.au is usually where they start.
That network effect has allowed REA to steadily increase pricing and expand its product offering for real estate agents over time.
Even when property volumes fluctuate with the housing cycle, the long-term shift toward digital property marketing continues to support the business. I think that structural advantage gives this ASX share a strong foundation for long-term growth.
WiseTech Global Ltd (ASX: WTC)
WiseTech Global has built one of the most ambitious technology platforms on the ASX.
Its CargoWise software helps logistics companies manage complex global supply chains. Freight forwarders, customs brokers, and logistics providers rely on the platform to coordinate the movement of goods across borders.
The logistics industry is enormous and still relatively fragmented from a software perspective. WiseTech's strategy has been to build a global operating system for the industry, integrating logistics processes into a single platform.
That vision gives the company a very large long-term opportunity. If WiseTech continues expanding its platform and integrating more of the global logistics ecosystem, its revenue and earnings could look dramatically larger over the next decade.
Aristocrat Leisure Ltd (ASX: ALL)
Aristocrat Leisure is one of the world's leading gaming companies.
The business has long dominated the global gaming machine market, supplying slot machines and digital gaming systems to casinos around the world. But in recent years, the company has also built a strong presence in mobile gaming through its social casino and mobile gaming divisions.
This combination of land-based gaming and digital gaming gives Aristocrat multiple growth drivers.
Gaming remains a highly profitable industry with strong global demand, and Aristocrat has proven over many years that it can create games that resonate with players. If it continues innovating and expanding across both casino and mobile platforms, I think this ASX share could remain a major global player for many years to come.
Block Inc. (ASX: XYZ)
Block is a global financial technology company focused on making financial services more accessible.
Through its Square ecosystem, the company provides payment solutions, point-of-sale technology, and business tools for merchants. Meanwhile, its Cash App platform offers peer-to-peer payments, banking features, and investing services to consumers.
What makes Block interesting is the scale of its ecosystem. Millions of businesses and consumers use its products every day, creating a powerful network that can support additional financial services over time.
Digital payments and fintech adoption continue to expand globally, and Block remains well-positioned to benefit from that shift as it continues building out its ecosystem.
Foolish Takeaway
Sigma, REA Group, WiseTech Global, Aristocrat Leisure, and Block all operate in large markets with long-term growth potential.
If these businesses continue executing well, I think they could reward patient investors over the next decade.