Even if the AI bubble collapses tomorrow (it won't), to see lower consumer prices you would either need old stock to be marked down or the fabs that are currently making AI cards to switch to making gaming cards and those cards to be manufactured and come through the market. That will take months. Not only does the bubble need to pop, but everyone involved needs to believe and accept that it has popped, otherwise they will continue to keep prices high and AI production high in the hope that their plans remain correct.
Remember that it's psychologically much harder to accept making a less money than you thought, which happens when you mark down prices, compared to making more money than you thought, which happens when you mark up prices! This is why prices tend to be "downwards sticky" and so, instead of going down when demand drops/supply improves, they instead tend to stagnate while other prices continue to rise gradually with inflation.