This is key. People will talk a big game and then make excuses why they can't pay. Make a version and sell it.
This. The best customers are the ones who have already hacked their own crappy product, probably in a spreadsheet or some chat group. As long as yours is less crappy, there's a market for it.
that makes me very optimistic, I've located many related WhatsApp groups and telegram, the only thing that concerns me is how to deal with copyright, people seem not to have any problem infringing copyright on WhatsApp and telegram sharing files.