The growth in this market is because of the growth in blockchain. Wall Street does not have enough money to outpace that growth.
That said, you can pick an individual token and see that it is overpriced. There will be tokens that fail and become worthless. On an individual basis, it is buyer beware. There is a lot of junk out there.
However, as an industry, there is no amount of money which can grow quicker than the innovation we are seeing on here. This is going to be unprecedented.