Back in the day I had a close friend who ran something on Instagram that would scrape data, allow scheduling of posts, groups that would be automated to like your posts (non-bot accounts), etc.
They had considered selling at one point because they feared Instagram was going to shut them down with legal force. They clear nearly a million in revenue before FB legal team showed up and told them to cease and desist.
They closed shop, took their excellent profit and went on to found actual enterprise software.
TL;DR OP probably wants to sell to not have to gamble with legal coming after them as they grow.