You mean should we spend a lot of money (like $7K, $10K, $20K) on the state of the art electronics (AVP, AVR, Amps, etc.) and speakers if
all we do is use streaming media?
I don't think we should spend the MOST money on any electronics regardless of the media.
The salient thing we should focus on include:
1. Diminishing Returns. Why spend $5K-$10K more on ANYTHING (audio or video) if we really can't tell a SIGNIFICANT difference?
2. Pride of ownership. To me, there's no POINT of owning anything if I'm not proud and completely happy with what I own at the end of the day regardless of how much money I save.