Yes, the new 4K Blu-ray players are marvels of home entertainment technology, but even with all their superb specs, they’re only as good as a perceived consumer need for them allows. Once average internet speeds connectivity catch up with the needs of 4K data streams or new compression techniques are developed to crunch 4K video down even further, 4K Blu-ray suddenly becomes little more than a luxury for a whole bunch of consumers.
Source: Why 4K Blu-ray has a shaky future in home entertainment –