Wasn't that always the case? I mean compared to my IBM PC clone, mine did way more and cost way less. And it was upgradeable. And mine could play games.
Gaming aside (though that particular gap is beginning to close) I honestly can't think of anything I've wanted to do with my various Macs over the years that I couldn't because of macOS.
The closest I can get to is running radio station playout software, but that was less something I needed to do, and more an itch I fancied scratching at that moment. Other than that, my Macs have always had a way to do exactly what I wanted with them.