Without seriously digging into the data, 2001-ish (dot-bomb) was pretty much a nuclear winter for tech and 2008-or so was enough of a general downturn that I made the decision not to play my networking cards even though I didn't feel in a good place with my then-employer. Today doesn't seem great--certainly not quit a job/have a new job by Friday great for most much less work multiple "full-time" jobs like some people were boasting of a while back. Stuff is certainly not falling into your lap to the degree it was 2-3 years ago. You have to chase it and may or may not luck out.