Your scenerio is what happens if everyone buys stocks. In order to prepare for that possibility about the only thing to do is have all major purchases done and for the lucky few have the means to be self sufficient.
The volume does not have to be heavy al all to see the price of stocks go up as I describe, because it is not so much that stocks are worth more, but that the dollar is worth less. Or, perhaps, worthless. Just like bread. is a $60 loaf of bread any more nourishing or tastier than a $2 loaf of bread? No. Nor does there have to be a huge increase in bread buying. It’s just that more dollars are chasing goods, and sells won’t let them go for less than it will cost them to replace the flour, yeast etc, and pay their bakers. As the carousel spins out of control.