You're correct that this is foolish for any entity who's primary differentiator is their website. If you're Seemless, competing with 10 other companies that do

You're correct that this is foolish for any entity who's primary differentiator is their website. If you're Seemless, competing with 10 other companies that do identical things, you probably don't want to also look exactly like them. If you're Cloudflare, Heroku, Twitter, Mint, Chase (or even Google), as long as its not hindering improvements to functionality or ergonomics (which it might - but also might not), who cares? Meanwhile, primarily this is appropriate for small players. If you're in the early stages of building anything, you want to build your core product but have your website still look professional. The correct sentiment here might be: "$99 to have your site look as professional as all the others! Yes please."