The insulin produced now has benefited from advances in technology just like most things. The fast acting insulin is predictable and works in 45 minutes to an hour and a half. The original insulin took hours and wasn't nearly as predictable or stable. Testing/monitoring technology has seen even more significant advances.

I owe Banting and his colleagues my life, but it is different. That's not to say that the continued well being of the public should be profitable and exclusive.