I disagree completely. Facebook was just Myspace without the terrible UX. Google was just Yahoo but better. Tech businesses can easily move in over each other if there is a way to make it noticeably better.
Facebook did not start as a competitor to MySpace. It started as a niche social network for universities, and then eventually branched off to be a competitor to myspace. By the time it did, it had already positioned itself as a unique product. That's quite different than say, people upset with Reddit over the Apollo situation looking for a Reddit clone with a better API policy, or people who like Blue Sky because it's "Twitter without Elon Musk".
