It's all
deja vu ... back in pre-2000 it was web stores, e.g. pets.com, then more recently it was block-chain this and that. Now it's ML/DL/AI.
The VC playbook is simple, gamble with other people's money, hoping that 1 in 20 bets pays 100x in order to pay off the 19 losers and collect their fees. With carry they just can't lose. It's either win or win BIG.
In spite of all their posturing, VCs can't accurately predict the future either.