This is common knowledge for those pursuing CS PhDs. You don't do it for the money. If you only care about money, a master's degree is what you want.
The career consequences are also weirdly mixed. Some places seem to recognize that, along with your area of specialization, getting a PhD also involves a fair amount of project management, writing, etc skills. Other places (or even different people at the same place), seem to think it's a glaring red flag that you can't "get real work done" because you sit around all day in a smoking jacket, thinking. (I think that's mostly bunk--academia moves fast these days, but that sentiment is nevertheless not uncommon).
And, if anyone has actual advice on monetizing a comp/neuro PhD, I'm all ears :-)