Work Reform

You get laid off... and then one of your connections from the last 15 roles has an open position that you fit in.

alternatively: you as 50something tech worker who has only had one gig for 15 years gets canned for whatever reason goes to the streets and every single employer who interviews you sees just how out of date you are with technology because you haven't learned anything new in forever. You end up working at an arcade until eventually taking a huge pay cut becoming tech support or working for a low paying company nobody with experience wants to work for.

I have never seen a good worker who moves on not do exceptionally well in a year or two years. Maybe one role or two will be awful for a 20k raise so you stay a year... then the next role gives you ANOTHER 20k raise (so +40k now in just one year) and the new role is phenomenal. Two or three more years you find another role for another 10-20k and then 50k in equity that matures in x years to try and keep you. Odds are by then you have multiple offers to pick from because past managers/companies are interested in you. Maybe now you're going back to a former company but into a more senior role because of all that modern experience you've gained.

As long as you get minimum 1 year in most roles, and do not have significant gaps, you're gonna be desired. I will as a hiring manager 100% of the time be more interested in the resume of a guy who has been at 5 roles in 10 years for 1yr+ each, than one guy who has been in one role for ten years.