I already get multiple cold emails a month selling me some sort of software product or service that I don't need and that wouldn't work for me.
If a bunch of additional people start going and building MVPs, what keeps that from becoming even more of a flood, like what you get if you post a job application on LinkedIn nowdays?
I think sales is likely to get harder, not easier, soon.
And to your earlier post, I think the big question is: can individuals get more done on their own now building new things because of less organizational issues compared to incumbents, or because of less product complexity and scope? Is the organization the problem, or is the complexity of stuff built to try to service a thousand different previous sales deals and customers?
It's just work, there's no secrets to it.