If the IAF is pragmatic and if the MoD is convincing enough, we may see the ORCA slot in as well to complement the Rafale. But for that to happen, the IAF has to get those Rafales it wants, otherwise it just won't accept ORCA. It'll just keep creating MRFA RFPs and AoNs till 2040.
The concern about the TEDBF remains it's small production size. For 3 carriers and a possible future Andaman and Nicobar basing, the IN may want upto 4-5 squadrons of TEDBF, but that is just ~70-80 units. IMO, far too few which will result in high unit costs as the cost of development, jigs/fixtures, tooling, new assembly line, etc. will have to be borne by the IN alone. Even with commonality factored in, the TEDBF will still cost quite a significant amount.
IMHO, the GoI has to intervene and get some sense driven into the IAF leadership, which has an opportunity to shape it's own indigenous Rafale class fighter with the ORCA.