The Problem is not Vimeo, the Problem is that YouTube has established the expectation that Video hosting on the web should be free. No other Video CDN can compete with that outside of a specific niche. Google owns Video.
It's not like they have unlimited funds for bandwidth, it's Vimeo not Youtube. The thread also mentions that this is clearly stated in their ToS, if you use more bandwidth than the 99th percentile then you have to pay more.
I like how Vimeo analytics are broken (not counting embeds) and they are very casual about it. I think I remember Louis Rossmann getting hit with the same $8K some time ago and discovering there is nothing in between.
I'm sorry what is the person complaining about?<p>Should every app on AWS using more than the free tier complain that AWS wants them to pay because they have a <i>historically popular app</i>?