Developers are typically motivated by net revenue which is more dependent on audience size than fees. That is, if you sell an app for $1, would you prefer to earn $0.70 on a million downloads or $0.99 on a thousand? (With the former you can buy a house, with the latter you can buy a laptop.)

And as you've pointed out, implementing support for third party frameworks and funding improvements to webGPU, wasm, etc is expensive. Even recreating the webOS UI would be a considerable undertaking.

> The biggest issue as you said is financing.

Exactly. I agree that it is technically feasible, my point is that it is economically challenging. Not impossible, just extremely unlikely.

> The best bet here would be replacing something like Tizen where a corporation is already investing.

It looks like the last Tizen phone was released eight years ago and the Tizen app store shut down four years ago. Like webOS, it lives on as an OS for TVs, but I am skeptical it can rebuild enough momentum to challenge Android or iOS.