Wigwam we have something in common I never use self service either and for the exact same reason.
Making lots of money for companies and shareholders is a by product of producing/providing something people find useful and purchase. The more money they make the more people they employ the more they invest in R&D and if it’s a British company it’s likely that these jobs will be based on the U.K.
I firmly believe in socialism I want people who need help to get it whether that be financial help or for health reasons. The only way this can be achieved and sustained is by company’s making money and employing enough people paying taxes to make this possible.