No one want to see the price keep dropping to zero then bitcoin is done and cryptocurrecy is in the brink of death. The big whales holding large amount of bitcoins are pushing up the price in case the majority of bitcoin holders will lose the faith in it and dumping their holding.
The real whales are pushing
billions of dollars in new bitcoin businesses through vc. The price is a poor indicator for what's going on right now.
I think the actual number is actually in the tens/hundreds of millions of dollars. The VC is also not specifically betting on bitcoin but rather crypto currency taking off in general. The VC money that is being put into bitcoin related businesses will likely see a ROI in the event that either bitcoin or any altcoin is successful, as the businesses could easily adapt to another altcoin