I will buy physical goods that I truly do own.
But the only thing you actually own is the physical disc, the content of that disc is licensed to you, you don't own it. So it's no different to the "ownership of digital goods", if you think it is then you simply do not understand it. Those "digital goods" (that are licensed to you) are stored on the storage device that you own (your hard drive) just as the "digital goods" (that are licensed to you) are stored on the physical disc that you own in the case of a DVD. The difference being that if the physical storage medium fails then if it's something I purchased online rather than physicall I can just re-download it.
More to the point,the publishers can't suddenly just delete it from the online library at a whim because of a licensing dispute, like when about one third of Netflix's offerings has disappeared over the last couple of years.