It's interesting that the the author created three saas over the weekend as some sort of proof that execution is useless now. But would any company ever buy one of these? No, because for a company to buy your saas you need salespeople or some marketing channel, compliance and regulatory checkmarks, SSO integrations, ability to take and implement special feature requests, SLAs, maintenance and support capacity, etc.

That's the execution part of creating a successful business and it's still entirely missing.