Something I've been thinking about recently: does anyone think Slack followed Thiel's advice? It entered a space that already existed (didn't go from 0 to 1), w

Something I've been thinking about recently: does anyone think Slack followed Thiel's advice? It entered a space that already existed (didn't go from 0 to 1), with several competitors, solving a problem that was widely known (email is a broken way to get work done). Yet it's becoming a monopoly and will likely be a very valuable business. It seems like there can be tremendous value in making something really good when the existing solutions are not good, and that creating an extremely valuable business doesn't require doing something entirely new.