Because "investors" are a large group. Many of them are not involved in the industry and are clueless about tech. Same reason they invest in OpenAI, that hasn't made any money.
Investors, both commercial and individual, often have more money than sense.
I didn't say they make it. They have it, like an older person who grew their portfolio over time. They are an example of someone who invests in AI without knowing anything about what it is.
Investors, both commercial and individual, often have more money than sense.