If Mastodon became as popular as Twitter it would end up with at least part of it being almost the same as Twitter. The main reason for the differences are that very different types of people are using the two platforms currently.

As a teenager I pirated everything, but that was mostly because I didn’t have the money to buy it anyway. These days I mostly use FOSS and buy things like games. That being said, my 11yo likes The Sims 4 and it is almost $1200 for everything so fuck EA.