That and the near-zero interest rates on savings. When one sells stock, they have to pay capital gains, so they don't have the full amount for themselves. And what they do have brings in no interest on savings. Besides that, they lose out on dividends. People feel trapped and have decided to "sell" when the prices start declining.
Only.....SURPRISE....the big boys will know ahead of time when to burst the bubble and they'll take their profits. For the rest of us, prices will drop like a rock before we can even get a bid in.
The thing is, the ptb want it that way. Otherwise, CDs and other safe savings would be paying 1% now, 2% soon after. That's the only way to gradually deflate the bubble.
[ the only thing propping up the economy right now is the “propaganda bubble”
That and the near-zero interest rates on savings. ]
And when that savings one Bursts all we will have is the propaganda to prop it up....