While its probably hard to disagree about market cap, there are a lot of people writing software that backs your laptop/desktop, runs your bank, plans logistics delivery routes, runs medical equipment, etc.

There is a lot of software out there that isn't dedicated to triggering human dopamine receptors. You don't hear a lot about it as it's just part of the job.

And I didn't choose to have integrity--it's just that nobody ever offered me enough money to compromise it. :)