We have a Panasonic BluRay player at home that gets used quite a lot. Almost every evening it gets used by someone to watch streaming videos from Netflix or Amazon Prime using the built in network interface. Once or twice a week, it also gets used to play standard DVD's from Netflix, and a couple times since getting it we've even found something we want to watch on actual BluRay.

(Translation: BluRay disks aren't going to take over, but the additional features of the devices are a bulkhead for streaming media in the living room.)