I think the combination of 4K and streaming services are the major culprits in Oppo's decision to jump ship. The price jump from DVDs to Blu-Rays years ago was somewhat of a shock, but there was still growth potential there. With the price of most 4K discs being around $25, very few people are going to get on that merry-go-round for the 2nd time. I'm
pretty sure Oppo has crunched the numbers and seen there's no future in producing hardware for discs that relatively few people are buying in numbers big enough to support the platform.