Yeah for sure. One thing I think about often is if you're writing a compiler and it's slow (say it takes 10s per build), if you have 1000's of engineers running it 100x per day, that starts to add up quick. If you could get it down to 1 second, then you'd save a lot of actual engineer time, just not your own.

Scale is key here, but fast software is always a much better user experience than slow stuff as well. With the compiler example, if it takes 1s as opposed to 1h, then users can iterate much more quickly and get a lot of flexibility.