[jphackworth]

It's also often a very successful strategy for companies to copy the design of competitors, and differentiate on other things. Zynga copying competitors' games is a great example.

In this case, Curebit was only copying the design of a landing page, so it was probably not worth pissing off DHH even if that landing page was legally usable and worked better. Although it really seems that DHH was more pissed off by Allan's tweets and posts about it than by the design itself.