Going by the general sentiment in that thread, I'm sure there are better examples. There are a few people saying how or why they thought Dropbox wouldn't work, but overall the reception is very positive. By contrast, any mention of WeWork here causes an instant pile-on of quite impressive vehemence.

There are always going to be isolated nay-sayers for whatever reasons. When you get a near-consensus on HN that something's a PoS that's something that's worth bearing in mind.