Prices definitely increased, over the last 20 years new AAA games price increased from 45-50 EUR to 70 EUR.

With inflation taken into account that would probably mean flat prices.

With the increase in the numbers of players, the spread of DLCs and micro transactions, I suspect revenue increased even with inflation taken into account.

Could it be the cost of creating game is rising faster than inflation? Or game studio just got more greedy?