VGchartz need  " online service subscription chart "  that updated frequently, like Global Hardware and Software chart. Because the future will not just about hardware and software but  service like PS now, Gamepass, Xcloud, Stadia, Amazon, Apple etc. 

Even the great Phil Spencer have spoken that  hardware sales  is not important and subscription is will be the selling point of Xbox and they also will focus on gamepass/Xcloud and Stadia has entered the fray, soon Amazon will follow in the future.

How would you even get the numbers?

All we know for now its theres like 140k? Google Stadia users that downloaded the app.
(not all of which, were people that probably even knew what it was, or get a code to active it ect)

How would you track it?

Xcloud is still in beta right? so non.
Same with Amazon and apples, game streaming.
Stadia has less than 140k.

Playstation Now, at like ~2m users, is probably the "biggest" game streaming service there is on the market atm.
PSplus/Xbox Gold/Gamepass.... are differnt things and shouldnt be in the same chart, as one for game streaming I feel.

Without any numbers the whole thing will be pointless from the start. At best we can hope for quarterly results, and that's it.

I am proposing it for next year if Xcloud released alongside Amazon 

Then comparing consoles with subscription services should be ban in here,  because this site are strictly focus on consoles and real hardware

Only if you go around and ask those companies nicely for their internal numbers.

I guess we could have a page similar to what we have for each video game, for each subscription too. Listing the most up to date figures. E.G:

But as figures won't be reported regularly, if at all for some services, there seems little point in having a dedicated chart or graph.

When was the last time we got Xbox Live Gold figures? 2012? 2013?

I don't see the reason for that, VGC can't track the sales for digital games. So the subs would be updated whenever and only when company gives numbers. So it would just be a repository for official numbers.

How about we, instead of tracking sales of games or subscriber counts, we just track revenue generated per game?