Good point, there are a lot of bad ideas out there. But, even the best ideas/products are not what they started out as, they involved pivots and market changes. Was this due to luck, or were the founders fundamentally committed to creating a business that adds value vs. simply in love with their "great idea"?
I like to think successful founders "got there" pivoting or otherwise, by being good at bringing a product to market and building a company around it.
Startups that need to as ef4 put it "outsource the hard stuff" are pretty much proven bad at bringing a product to market, I don't think it's likely their problems will be as simple as customer development vs. being underprepared, inexperienced or just plain unsuitable to found companies.
