There are people who don't really know what Bitcoin is and nevertheless invest in crypto

Unsurprisingly. After all, all these ICOs have marketing managers, and all of them are interested in finances flowing into the blockchain.
I have been always wondering, how come that a geek thing has become such an object of attention from the IRL business?
Because the business always looks for innovations both in the cost reduction and in marketing. Artificial hype and useful technology don't contradict to each other.