Whenever I hear someone say “if X captures 1% of the market, that’s $Y Billion” I can’t help but feel like that’s backwards: If X captured $Y Billion of revenue

Whenever I hear someone say “if X captures 1% of the market, that’s $Y Billion” I can’t help but feel like that’s backwards: If X captured $Y Billion of revenue then it’ll have 1% marketshare. Capturing 1% marketshare is not equally easy in all markets, it’s much harder to capture 1% of a very large market. There’s no hard-and-fast rule that “surely anyone working hard enough will get at least 1% marketshare”.