Some people do not quite understand why.
Imagine in they were all Russian and owned by friends of Putin.
It should be a matter of national security for other nations to develop regional competitors. It should also be in the inrest of the US to have more internal competition.
This is not easy.
Making Facebook 3.0 is not the problem, though running at Facebook scale is a challenge.
It is how to get users to adopt it. As has been the problem for US upstarts as well.
Thankfully a lot of younger people want other social network platforms than Facebook, but it is a bit pointless when the owners of the new networks are the same people who own the old ones.
I guess TikTok proves it can be done. It also proved how upset US social media gets when competition knocks on their doors.
China, by locking out competition, developed products that are used domestically. There are drawbacks and negative effects of that as well.
I dont know how big VK is in Russia.
Ideally Facebook, Google, Twitter, YouTube, Instagram would be broken into 250 or so different companies spread out among different nations and regions.