It's a consumer product. It is very draining. In today's world consumer don't want to pay for anything, unless they really want the product and they don't have a way to get it otherwise.

Many users would use the product and then file chargebacks. Many users will go to any extend to get out of paying coming up with either sad stories, lies or threats. When it's a low cost, high volume product (5m+ paying customers over time) - you deal with too many of these and sometimes it's very demoralizing.

I used to work for someone else in Saas and this wasn't such a big issue there. Next thing I do won't be in consumer.

Some ideas where tried end to end in a week, some were run for 2 years. Did a lot of mistakes along the way.