https://www.schneier.com/blog/archives/2020/07/on_the_twitter_.html

"...the other solution is to break up the tech monopolies. Companies like Facebook and Twitter have so much power because they are so large, and they face no real competition. This is a national-security risk as well as a personal-security risk. Were there 100 different Twitter-like companies, and enough compatibility so that all their feeds could merge into one interface, this attack wouldn't have been such a big deal. "

sounds exactly like mastodon :)