It would require a subscription to the geforce now/cloud provider and a subscription to blizzard yes, but would be still a win for you as a player.
Example 2k euro laptop = 16 YEARS of subscriptions payment (let’s say 10 euros) for cloud gaming service in which you don’t have to buy any new gaming computer. In a 16 year period you would most likely have to exchange your pc/laptop at least 3 times.
Instead you save cash, can buy your 33 premium mount, peripherals for gaming or go for an additional bear.
There is no reason why not to go for it if the performance of playing is fine.