[colllectorof]

Why does it have to be driven by ad revenue? There are plenty of people and companies who would gladly pay good bucks (relatively speaking) for a decent transcription.

[cfcef]

I'm sure one could: https://news.ycombinator.com/item?id=11127534

But rolling out a paid service like that comes with a lot of expectations that being part of a free app doesn't.