At that time, developers, chains and users were bound to each other
SOL developers could not go to ETH
EVM developers could not write MOVE language
SOL projects can win the hearts of developers and users on SOL.

Now, although it is written as DEV, those people actually did not write a line of code
Migration cost is extremely low
Copying cost is extremely low
To put it bluntly: if you don’t do it, there are plenty of people who will do it
Chain has long been a sufficient but not necessary condition for CEX
But CEX is still a sufficient and necessary condition for the chain