I don't think AI will be a winner-take-all scenario. If that is to happen, I think the following assumptions must hold:
1) The winner immediately becomes a monopoly
2) All investments are directed from competitors, to the winner
3) Research on AGI/ASI ceases
I don't see how any of these would be viable. Right now there's an incremental model arms race, with no companies holding a secret sauce so powerful that they're miles above the rest.
I think it will continue like it does today. Some company will break through with some sort of AGI model, and the competitors will follow. Then open source models will be released. Same with ASI.
The things that will be important and guarded are: data and compute.