Lots of possible stories if you write "and then it crashed" on the last line of a sheet of paper and work backwards.

e.g.

1. US economy becomes lopsided towards AI as per Dutch disease 2. US exports become relatively expensive, imports become relatively cheap, collapsing employment opportunities in general outside making more data centres 3. Nobody in the US except hyperscalers can afford anything 4. Fixed output from people still making consumer RAM not anticipating this 5. Oversupply relative to demand 6. Market price of consumer RAM collapses to shift stock

Of course, the ease of writing backwards is also why, famously, 11 of the last 2 recessions have been predicted. Or whatever the exact quote was.