No one said that.

The main issue here is that "max computing power" is something we can readily measure. Average computing need we cannot, as it depends on so many issues, such as how well coded are the programs you use, how many processes are running in background, etc. The average for me is not the same for you or some other person.

Also, as computers get faster, more and more stuff is put on them. Most desktop software today is Electron-based, which means it is a chrome instance running a website that looks like an app. This is quite slower than native apps, but far easier to develop. Ten years ago that would be unthinkable. Today it is the norm. Why? because there is more computing power available.