I don't necessarily think DHH's problem is with not charging for things, but for not charging and calling yourself a business/company. Listening to him talk about it, he seems to be more pissed about this bubble that's come up in the last few years -- people are coming up with technological ideas that don't possess a lot of real monetary value, yet burn through investor capital without ever developing a revenue model. It's South Park underpants gnomes all over again:

Step 1: Steal Underpants (Build software) Step 2: Step 3: Profit!