The bigger the cost, the bigger the risk.
If a game developer takes twice as long to develop a game using twice the budget and charges twice the price, they are essentially taking twice the risk. Don't put all your eggs in one basket, etc.
The same goes for the customer; Spending twice as much on a game does not mean I am any more likely to enjoy it, but it does mean I lose twice as much if I don't enjoy it.
If a game developer takes twice as long to develop a game using twice the budget and charges twice the price, they are essentially taking twice the risk. Don't put all your eggs in one basket, etc.
The same goes for the customer; Spending twice as much on a game does not mean I am any more likely to enjoy it, but it does mean I lose twice as much if I don't enjoy it.