Sequence risk matters the most in the first decade. So long as you have a backup plan where you can restart working, even at reduced rates, then you can protect yourself against sequence risk. Older and in an economic downturn means that finding work could be difficult, so one would probably need to keep the backup plan “warm”: for example continuing to do a day or two of consulting work or a non-technical role, preferably in an industry that is counter-cyclical.