I used to buy more Blu-Rays but some TV series have stopped disc releases, presumably to drive streaming, or just aren't worth buying. Expanse: Season Five, sp

I used to buy more Blu-Rays but some TV series have stopped disc releases, presumably to drive streaming, or just aren't worth buying. Expanse: Season Five, specifically: why must I get Prime when I've got Seasons 1 - 4 on disc? And who's gonna buy GoT S5-8? Westworld S4? I've got no comment on any increase in DVD sales, though. That's not my market. I only rip CDs (which skip like crazy, while I've literally never had a disc issue with DVD/Blu).