The business model is not pay to play, it’s based on micro transactions, which is, selling gems to buy in game content thus making the money needed.
I bought this game, it wasn’t free…
You want to know how you get a company to release more expansions? You don’t give them money for a skin, that encourages the sale of more skins through the gem store. Companies aren’t going to stop you from giving them money for minimal effort.
It used to be that a company had to make a good game then sell expansions in order to make more money. But when people throw cash at them for nothing it only encourages more of nothing to occur.