I’d say businesses that already spend $$$ on a 3rd party TTS service and know how expensive it is or have content but haven’t pulled the trigger due to the prohibitive cost. I wrote this on the Product Hunt page:
> “… read aloud apps (e.g. Pocket, Speechify, etc), UGC platforms (e.g. Medium, SubStack, etc), publications (e.g. Bloomberg, NY Times, etc), and e-learning platforms (e.g. Duolingo, Pearson, etc). We’re also interested in providing discounts to non-profits (e.g. Wikipedia, etc)”