It took them a while to release GOT-2 full model because of the implications for things like spambots. The GPT-3 paper indicates that they have been monitoring forums and noticed that bad actors haven't really been using GPT-2 for their own devices. That's unsurprising because GPT-2 takes a lot of hardware to run and I assume it messes with the economics of spamming.

GPT-3 will take significantly more resources to run. However, part of me doesn't want it released ever because of the implications of what bad actors could do with it.