The network is already here. 4K video burns 20Gbps, Tidal hifi only 2Mbps!
Well... that's the thing. I remember back in the dot com days, it was said "voice will be free"... people scoffed. With 4K video driving BW consumption needs... 1080p based content will comparatively drive down to next to nothing... audio... even more so.
I keep thinking that if Tidal were to come in at the same price point as a Spotify/Apple/etc, then quality becomes the differentiator. They are banking on the "coolness factor" to justify the price... similar to how Apple can justify a $1K smartphone and sell a crap ton of it. But they are two separate things... an iPhone is a physical object, and every time you pull up your phone to your face to unlock it, you're telling the world... "I've got the cashola to buy one of these bad boys" (that's not the only reason to get one mind you, but status plays a contributing factor). How do you do that with Tidal vs Spotify? You don't (IMHO).
Granted... the services are all to easy to switch at first, but once their machine learning algorithms take hold, learn your likes/dislikes, it then becomes more of a hassle to switch. To that end, they need an aggressive push to acquire customers (look at T-Mobile and how they've become relevant).
In the grand scheme of things, storage, network capacity, etc continues to commoditize, and until that point, capital "buys" you customers which Softbank could help with.