Very few of them scale up, become big enough to make an impact, sustain themselves.
Every Hype cycle idea creates hundreds of startups ,many of them wither and fall by the wayside. Why is the mortality rate so high?
With no shortage of funding and societies' newfound respect for startups, shouldn't more of those be thriving?
Ideas need passionate teams to commit, pivot, persevere and focus deeper. With sustained focus comes expertise, innovation , differentiation and business survivability.
It's a long term game. Learn from Amazon!