Don't make assumptions without asking. I know a PPL over 60 who sold a business and was thinking of a new part time career, and considered a CPL and FI rating. It's been done before. And so long as you can pass a Class 1 medical, there's no reason why not
not making any assumptions, however do you know any airlines taking new pilots over 60 ? or even 100000 hour pilots over 60 ?
re the nnp / ppl costings above, nppl is less hours to train, less hours means less money !