I have 2 SaaS. One that fit this advice and one that didn't. The one that did is a year old without a sale. The one that I had no one in mind that would pay for

I have 2 SaaS. One that fit this advice and one that didn't. The one that did is a year old without a sale. The one that I had no one in mind that would pay for it was profitable from month one. However both were bigger weekend projects I wouldnt spend much more than that on it