A few years ago, I built an exact replica of a Saas product I saw online and priced it 1/3 theirs. The actual founder went mad and started a smear campaign. Lucky for him, Workload at my regular job picked up and I abandoned the project, but this highlighted the weak moats of most of these products.
and this is the main reason most companies overhire. It's so that engineers are less inclined to go home and build their own competitor.