Grayscale and microstrategy started buying all the way from 10-15k range, and tesla bought in 40k or so range, and it is crazy to think that they have billions thanks to their investments. There is zero chance that other companies who see this increase in bitcoin and the profit making possibility of bitcoin and not go in, all those huge wall street companies, british ones, european ones, and any other nation, all those companies will get in with their billions of dollars, then we will have bitcoin at 500k+ for sure.
Please stop putting Grayscale in the same bucket as companies that buy bitcoin as part of their treasury. These are two different things and Grayscale buying bitcoin has absolutely nothing to do with bitcoin treasury purchases.
And yes, there is significant possibility that other companies see bitcoin rise and still don't purchase it. Because it happens every day. Far more often than what you're claiming happens. The level of hype here doesn't look any different from speculators in the 2000s saying "anyone who doesn't flip houses is an idiot, there's no way more people aren't going to continue to get into the market and push prices up."
There are no guarantees in investing. Not with housing in 2000s, not with crypto now.