Most of the people I know, who say “I could build that in a weekend” mean that they could build a product that solves 90% of the problems in that problem space in a weekend.
And that’s true. The other 10% is what gives you competitive advantage as a product.
The truth is that _if_ the market was empty at the time; then those 90% would give you enough runway to finish the rest of the 10% with a certain high enoufh probability.
I can't speak for anyone else, but as someone who has literally said that on several occasions, you've perfectly summarized ( 90% of :) ) what I generally mean.
And that’s true. The other 10% is what gives you competitive advantage as a product.
The truth is that _if_ the market was empty at the time; then those 90% would give you enough runway to finish the rest of the 10% with a certain high enoufh probability.