What do addon devs think?

I have been told that generally speaking finding the right idea for an interesting add-on that has not been created before is the hardest part, especially when trying to make money from it. However, other than a few exceptions it's hard to make real money even when you get the right idea, it's more a small side income rather than how they buy their food and pay their rent. So while pissed because of all the work they put into it, for the most of them it might not be that horrible either.