>>279882363
unlikely, udon is really intuitive and easy to use, there's few limits to what you can do besides access the client's local files.
Average playerbase in vrchat grows year after year, it's already beyond the critical mass needed to follow a linear growth pattern like second life did, and they're adding a virtual currency so that creators can make money too.
They were much smarter than other teams like high fidelity or sansar though, they made sure the game itself was cheap to operate, free, and fun and functional, easy to make stuff for with few limits, before thinking about ways to put an economy in it. 
the only real competition is neos and believe it or not recroom, virtual cast to a lesser extent but VC gets along with Vrchat, since they fill different niches.