Most founders of startups only want money. They do not care if they make other people's lives better or worse.
This started with ethics laws. Ethics only means following the law and making money.
Seeking the greatest good for the greatest number was aborted when ethics became mandatory.
Ethics literally turns people into sociopaths. They are legally prevented from considering the welfare of others if corporate profits are on the line.
I am NOT an ethical person. I am a moral person. I work for the greatest good for the greatest number.
It is not a lack of diversity. A homogenous group without women or older workers is still capable of trying to improve the world for everyone.
Having said that, cutting costs is a moral thing to do. That eventually improves everyone's standard of living. Capitalism is better at cutting costs than it is at anything else, and capitalism has pulled more billions out of poverty than any other economic system ever.
It is perfectly moral to disrupt an industry by introducing a better product at a lower price and driving the incumbents to innovate or go out of business.
I wish we taught morality in schools.