Back in the day, the reason why people kept targeting Flash is because all the other alternatives were worse. If you recall, the only thing that made a difference was mobile, where Flash ended up being a liability due to performance and battery lifetime issues. And even then it took a company like Apple, which could rely on its cult status to draw the hard line on mobile Flash, ship iPhone without it (unlike Android which had it, warts and all), and steadfastly refuse to even consider adding it, forcing everybody else to choose between using Flash and supporting the lucrative iPhone ecosystem.
I'm not even sure what the equivalent would be for CUDA tbh.
I'm not even sure what the equivalent would be for CUDA tbh.