I work in a large enterprise company, have both windows and mac machines, and excel works equally great in both, but more and more excel runs in a browser.

We mostly email links to spreadsheets running in cloud. So it really doesn't matter what your OS is any more from an excel perspective, as long as your computer can run a modern browser you are good.

95% of people who use Photoshop would probably be served just fine by Krita, or even GIMP if they learned the somewhat wonky UI, and would save a ton of money in the process. However, people usually want to use the "standard" because of some vague fear that the alternative isn't 100.00% compatible, or that it won't have some obscure feature that they don't even know about yet, etc. I think Excel is exactly like this today, and so is Word. There are many alternatives that are just as good (and much cheaper) for 99% of users, but people still want to stick with "the standard" instead of taking a small risk on something different.

Maybe in the coming Great Depression of 2025, people will think differently and start looking at cheaper alternatives.