TL;DR: There's many more ways to lose money or barely break even than gain from AI investing.

Because unlike previously:

  - You can't invest in these things directly (mostly private) so gains are at best diluted for retail investors.

  - They can take your job AND still be unprofitable (i.e. on VC money/subsidized).

  - Value accures to capital/companies using it potentially, not the AI labs themselves in a competitive market. In which case the gains will be across many industries and be diluted (i.e. not life changing if you invest enough to offset income loss)

Combined with the fact that many are reliant on their income to pay the bills and don't have enough capital to invest in these things and yes:

  - They are exposed to the loss of income of their labor.

  - They don't have the capital and/or risk tolerance to invest accordingly.

  - The way to invest in these isn't obvious and is subject to unsystematic risk (i.e. can you pick the winners?).