First of all there is no lifetime account or you really belive someone will sell you his spotify for let's say 100$ and then he will pay it for each month?
Thats the part where escrow is usless because if it will stop working after a month the escrow would not refund you and the seller is gone long allready.
By lifetime ,he meant,if one accounts stops working the seller should be able to provide a new one until the end buyer is satisfied.You could see it in few threads around "Selling Brazzers account lifetime warrenty" etc.
That is the point a newbie can say yes he will.replace it and once he got then money from escrow he will not care anymore.
You know users here will scam you out 1$ if they can