[vinay_ys]

In capitalist economy, if something is extremely profitable at scale, it means a lot of people paid for it willingly. Usually, such things are not harmful by societal standards of the day. Working on such things is acceptable.

If you want to change societal standards, you can make meaningful impact only if you are powerful – power through money, politics or influence. You don't make any impact on society through your own lone-wolf personal sacrifices in your private life.

Ergo, work towards becoming powerful first and then work on using your power to make societal change.

Btw, world needs all kinds of people doing all kinds of work. Most work is towards keeping the world running as it is (KTLO work). Very little work that happens in the world is venture bets (trying something crazy new that might work). Then there's some work that actually results in changes to societal norms - those are strategic bets. Only the powerful get to make those strategic bets. Note: Power is most often in the form of having shit tons of personal money to spend. And sometimes in the form of political power and through influence over masses (rarely you get either of those without making friends with people with money). It is extremely rare to be powerful without either.