That process usually takes years.

Here the price hike was pretty instant as secondary effect of DDR5 evasion in two waves. I July and now in October.

There is usually no shortage of old working PC components as they also are avalable used and tested from people decommissioning and upgrading systems. These are not some rare parts in normal market situations.

I made a habit of maxing out motherboards a year or two before upgrading to an new platform. This was always dirt cheap until like 5 years ago.