I had a side project called https://Apility.io while I was working full time at Microsoft. It started as a side project but soon I realized it got traction and hundreds of user used it on a daily basis. I added a subscription model to the existing community/free service and I got a good bunch of customers. Last year I had a dilemma: keep on working at Microsoft or leave and dedicate full time to Apility.io. But then Auth0 came up and offered me an acquhire. So now I’m full time (among other things) dedicated to Apility.io inside Auth0. Happy ending.