Do you think Y Combinator-esque programs with their short (3 month) durations and focus on traction discourages entrepreneurs from working on the Next Big Thing? Would Mark Zuckerberg have been accepted to build thefacebook.com? Would Larry & Sergey to build a search engine when no business model existed?
I am a big supporter of YC, TechStars and other seed programs.
Here’s my post that hopefully answers your question.