Hey @pierre, welcome to The Graph forum!
It might initially seem that way, however I encourage you to look at the detail of GIP-0081, which describes how a gateway, rather than a developer, chooses an indexer.
Indexers are paid in GRT. Developers already pay gateways in fiat, with gateways paying indexers in GRT. There is no change to that relationship as part of this proposal.
I agree.
If you read GIP-0081 in conjunction with Evolving The Graph Protocol Economics (2024), do you see anything missing from our target state that you would like to see?
There will be interim steps that do not fully achieve those objectives, but I think the target state aligns with your suggestion?