There are some useful nuggets here, but every company and founder are different. Having run three different accelerator programs I have learned to STOP assuming what makes a good or bad idea. Some of the companies I thought were certain for failure have raised multiple rounds, found product market fit, and are growing just fine. The first 18 months of a startup should include one thing, "GET SOMEONE TO PAY FOR YOUR P…
It’s obvious that a promising startup can fail, eg great idea but bad execution. It’s really not obvious that an unpromising startup could succeed, though. What were the main factors in those unpromising startups doing well?
That's what the poster you're replying to is saying - it's hard to be consistently correct on if an idea is good or bad.