Many decades ago I used to work for an outfit that created operations management solutions which in turn enabled banks to streamline ATM services and phone companies to easily manage pay phones. It even allowed Disney to provide a better customer experience at their theme parks! As a result of this software both ATMs and pay phones proliferated. (If you're old enough remember when pay phones started appearing at every gas station and you could drive up to them?) In the end one could literally see how their software was improving the day-to-day lives of others.
Next I worked for a manufacturing automation outfit. Our solutions helped streamline manufacturing operations and made it quick and easy to reconfigure a line to manufacture a variant. One of our more well-known customers who makes diapers used our system to manufacture several different diaper varieties off the same line. This improved manufacturing efficiency which lowered manufacturing costs and the savings in turn were split between the investors and the customers. Your diapers are cheaper to buy, investors are making more money, manufacturing is staying in the United States and local communities are getting more tax revenue. It's a win all the way around.
For the past couple of decades I've been working for a public utility providing electricity. While my work doesn't directly involve the generation of electricity, I do work to make sure that electricity is generated as efficiently as possible. Being a regulated utility those savings are split between the investors and the customers (the regulators manage that). I also work to inform customers of any abnormal situations with their service, which is typically an outage. We now provide customers the means to determine what's going on and when their power will be restored. Seeing how electrical power is the bedrock of modern civilization I see this as very important work.
Bottom line - I've worked in private industry my entire 30+ year career and I've always been working to improve people's lives. Yes, it is profit-driven but the goal is to improve efficiencies and split the savings with the customer. Everybody wins.
THAT is what you're looking for - opportunities to save people time or especially save them money or provide them a service they've never had before. Remember, making money isn't the point of a business anymore than breathing is the point of living. Yes, a business must make money to stay in business just as you must breath in order to stay alive, but the point of living isn't just to breath. When you interview see if your business understands this and if they don't, move on. Don't waste your time with people thinking the whole point of being in business is to make money.