[akiselev]

It would likely be a lot easier for someone from within the BBC, CBC, PBS, or another public broadcaster to convince their employer to contribute to the models. These organizations often have accessibility mandates with real teeth and real costs implementing that mandate. The work of closed captioning, for example, can realistically be improved by excellent open source speech recognition and TTS models without handing all of the power over to Youtube and the like.

It would still be an uphill battle to convince them to hand over the training set but the legal department can likely be convinced if the data set they contribute back is heavily chopped up audio of the original content, especially if they have the originals before mixing. I imagine short audio files without any of the music, sound effects, or visual content are pretty much worthless as far as IP goes.