Plenty of other folks at MNKD that know what they are doing, the hard part is over. Also, his daughter is a brilliant inventor in her own right and is pretty hot as well. Too bad she's married...
My grandma was 101 and couldn't knit but was still looking for a boyfriend. The elder Methuselah had no teeth but lived to be 969. Al is old but is developing a revolutionary drug delivery platform. Some people have purpose and blessing and their bases all covered.
I'm sure he has planned out what would happen to the company if he somehow passed on unexpectedly. The guy loves what he is doing for diabetes. He and/or his money/business would move on I'm quite sure. There is paperwork to handle this. Get your head out of you #$%$ please