That's for DOT, DMV and other organizations to sort out. Flight safety is what we care about. Aviation is our industry. If we need to pull old people's driving licenses, I'm sure with enough deaths it would be on the horizon too. Flying is inherently less safe IMO. To take a machine, fling it through the atmosphere at high speeds, and land it safely at a destination, is mindblowing to me. The reason this happens safely is due to regulation, planning, skills, and other reasons. Most of these things do not exist to any comparable extent within automobiles or many other industries. Take away this, and we're no more "safe" than anything else.

As far as Bellanca's point, if that many cargo jobs do not exist, what makes you think all that many major pilot jobs exist? Everyone has the same goal to be a widebody 777 captain, but the fact of the matter is not everyone can be because there are not that many jobs. That's the natural force that regulates the pilots in the industry and forces them to take other jobs because the piloting career doesn't pan out. You can't artificially create business to that extent. I've even seen quite a few people say "well, I don't want to instruct" or "I can't instruct people", but guess what, if you aspire to be a Captain/ATP, you are supposed to instruct and it's part of your privileges.