I think you are discounting the HBO brand and catalog as well as Warner Bros cinema. They are heavy hitters. They are missing a broadcast channel and football so I think a merger with PARA nabbing CBS in the future could be interesting, but NFLX or AAPL could gobble PARA up as well. Or maybe CMCSA spins off NBC/Universal like T did with Warner Media.
Market cap
DIS: $182B
NFLX: $82B
WBD: $37M
PARA: $19B
I would add CMSCA at $188B, but they are mainly the cable giant, not their NBC/Universal subsidiary. The same with DIS and their theme parks, but not to the same extent.
But you may be right. Time will tell.
On slight correction, WBD is $37B, not M. They would be bought up in a second at $37M since that's pocket change to DIS, APPL, and GOOG.
I think we're going to see some consolidation too. I had always thought we'd end up with D+, Netflix, HBO, and Prime as the main streaming services with Apple doing their own thing. Probably a good chance it'll still end up that way but Netflix is a lot more shaky these days. D+ is also hemorrhaging money but I have trouble seeing DIS abandoning it. They need to right the ship though with their big franchises on it.