I don't think it's as simple as "corps. = bad". It's more that naive slogans like "don't be evil" used to be taken seriously. Companies exist to make money. This is ok! It generally works well in a capitalistic system. But to expect more than that people are realizing is a pipe dream... which is why you need good rules in place (i.e., regulations, laws) to direct companies and their behaviors.

I don't know why I still lurk on what is essentially r/politicsandtech.

Not really. HN had its Eternal September moment years ago.