Some of the best indie solo devs out there produce some of the most amazing long haul ARR products into the millions. Its just a matter of shake-out to find the talent that wins.

Apps are more an "Art" vs "Science". There's no one right way to build anything in software, but there is, like fashion, your high end vs discount bargain basements. Lets aim for the Versace's and Guccis instead of the 10 cent dime store kinds.