No, it is closer to earning arx in the game - 400 per week.
You can cumulate, you can buy something from time to time, but it is like.... Patronite or smth like that

And for players - some ARX more for the same price than when you buy it from time to time.
For an example - 4 ships per year costs ~66 k ARX, it is 5500 per month, so you can pay 3 GPB monthly to get 5500 ARX, normally for 3 GPB you have 5000 ARX. Of course it is example. It is obvious it needs something to hold players with subscription, and not to turn it on just for have 500 ARX more and off after month, but you know what I mean in general.
You are assuming that everyone buys the ships for early release ? no other Paintjobs ? Or ship kits and you are getting the basic ship.
Pay £3x12 = £36pa = 60,000 arx ( or with your 66k)
Pay £13x2 and 1x£ 9.60= £35.60 =71300 arx
Or just buy 4 stellars at 33000 each which is 132000arx pa
Pay 1x£45 and 2x£9.60=£64.20 = 133000 arxs
Or 10 x£8= £80 pa = 138200 arx
I've tried to get work it out as best as I could using the actual costs and including the bonus arx for paying more . So if I'm wrong please point it out .
The problem sometimes is Arx hides the actual money spent which is why they are arx .
So the plusses for subscription are Fdev get an income guaranteed from everyone but that would only cover the costs for new ships what about new content ?
What happens if I don't like the type 8 or Mandalay or the Corsair ( I happen to like the Cobra mk 5 and the MK2 ) or the Paintjobs or shipkits or content ( I haven't killed a thargoid ) that's not fair I paid for stuff but not getting anything I like ? ( I am being deliberately obtuse) Or it's too hard or takes too long .
Do those who now not pay a subscription get the early access say ? Or new content ? Do we go down the you route where how much you pay depends on what you get ?
Keeping it not subscription based suits me . If I want to buy a ship I will plonk £18 if I have left over that may go towards a paintjob eventually or if I like some something I will buy it . But if it's not great or nothing to see Fdev get nothing and maybe then Fdev see what folk are after and what appeals and work towards that ?
and yes I'm aware you can't please all the people all the time
So as I said before I'm not a fan of subscription ?