When PS4 was just being revealed it was coming without any obvious or viable plans to pack in a headset. Over the months before releases there was some outcry (earnest discussion) to have it packed in. Moreover, Sony responded by packing at least 'something' in in the form of a functional if somewhat cheap ear bud and mic.
Did that grand experiment ensure that more people used voice chat in online games?
Not really, from my vantage point, I don't see more PS online players chatting or caring about chat. I play some Call of Duty and AC Black Flag online and most people don't have their headsets plugged in let alone set up. As you cruise through the rooms of online game you see most people don't even have the headset set up to even work because they don't even have a grayed-out icon for chat.
I just don't think the bulk of Sony fans like to talk in games, or are not acclimatized to that idea. There are various reason why that might be so, but it just seems like when even given the chance to do it with a packed-in mic, most people just tossed it aside. People thought the issue on PS3 was that there was no pack-in, but I think people just didn't want to...it wasn't part of the fan-scene of the PlayStation to talk in games.
What do you think? What has been your experience?