If the bubble doesn't burst in the next few days, then this is clearly wrong.
If it is so clear, then investors will want to pull their money out.
It's not about who's the best, it's about where the market is. Dogpiling on growing companies is a proven way to make a lot of money, so people do it, and it's accelerated by index funds. The REAL people supporting Google and Nvidia isn't wallstreet, it's your 401K.