They’ll sit. Unless forced to sell by a move, divorce, job loss or something else, long term holders will sit.
They will sit and fume about ‘people thinking they should give it away’ until the market capitulates to bottom, which is goving to take a couple more years. We’ve seen the first two in SD, sales volume slowed and prices flat-lined but median kept climbing. Now the next two or three years of actual contraction are upon the market.