It absolutely makes sense to compare. Because the comparison is generally made in the context of using Google services or hosting your own or going with a much smaller provider. One could easily host their own email or other similar service for a very small org and likely have better uptime.
It doesn't even really make sense to compare. And since we're dealing with cloud services where the large players have billions of users increasingly providing these services to everybody from small shops (I work for a startup and we use gSuite) to enterprises (many large companies host all their email on one of 2-3 major email providers).
Nothing I said above has anything to do with user experience as you describe it- that's a non sequitur.