This is how I convinced my parents to buy both a PS2 and PS3 - the PS3 was one of the most affordable blu-ray players when introduced, it just happened to have a game console attached to it.
The difference is that everyone (to some approximation) who is likely to buy a PS5 has a computer of some description that is perfectly capable of streaming media - you're not thinking "oh, I need to get that console so I can watch Facebook Gaming".
Yeah, the fact that the PS2 could play DVDs had absolutely nothing to do with its tremendous success.