The key here is that they only recently started breaking even on the PS3, and it was released in 2006. I think they've learned their lesson.
I'm wondering if perhaps Sony won a Pyrrhic victory here.
(To be less abstract: they probably made back the money already. Everything else is gravy.)
Legality aside, I'm a member of a private movie tracker. High quality 1080p rips come in at ~12GBs or more for ~1h45m of content. I have an 80Mb connection, and it still takes me about 30-35 minutes to complete the download.
1080p, let alone 4k, downloads are years away for the average consumer. What are they getting these days, 20Mb + download caps? So sure, fiber only, but my god it's a long way off.