This joke (despite being funny) is somewhat misleading of actual economic theory for 3 reasons: 1) market efficiency occurs over the long-term, 2) shocks (of the exogenous and endogenous kind) tend to reset the point at which markets clear, 3) both 1 (duration) & 2 (frequency) are far greater in magnitude under anything like real world conditions. Still more so within the tech industry.
Ya, economics would tell you that it very well may be a hundred dollar bill and you should take advantage. But it would also tell you that you probably aren't going to keep finding them and it won't be sustainable to go looking for them.