That something is useful does not necessarily mean that it will be doable for companies the capture enough of value to make up for the billions in investments they have/will have make in the coming years.

Right now the frontier AI companies are explicitly running a kind of chicken race - increasing the burn rates so much that it gets harder and harder. With the hopes that they (and not their competitor) will be the one left standing. Especially OpenAI and Antropic, but non-AI companies like Oracle have also joined. If they keep it going, the likely outcome is that one of them folds - and the other(s) reap the rewards.

Utility (per cost) will go up the tougher the competition. Money captured by single entity possibly down with increased competition.