One race-to-the-bottom phenomenon that (to me at least) appears to aggravate the impact of "corporate greed" is the social loop that goes as follows:
1. company decides to push the boundaries of the socially acceptable when it comes to cutting corners (e.g. screwing their customers, or employees, or environment, or debtors)
2. People don't like it, but rationalize this as being a natural consequence of incorporation and the profit motive. Hence while they grumble, there negative impacts to public perception don't actually cost the company as much as you might think
2b. Even if there's a boycott, there will be vocal minority that thinks it's all a bunch of whiny . They'll actively harass or undermine said boycott or backlash, even if in a purely egotistical sense their interests are actually aligned with the boycotters
3. Social norm is reset; we all collectively expect even less from companies. That doesn't however mean the new norm is better or maintained, because as soon as there's some new major conflict between short-term profit and maintaining a decent reputation in public, we go back to step 1 from the new, lower baseline.
Stuff like increasing partisanship, and decreasing incentives for journalist (whether profession, citizen or influencer) to maintain their professional standing (as opposed to targeting clickbate) probably smears those gears nicely.
Many companies have historically clearly paid well over the odds to maintain their reputation, and done well doing so. It's just not true that nihilistic short term greed has always paid; obviously it didn't and still doesn't really. It profitable to do the little, but simultaneously also to do as many cheap things that materially affect public standing as possible.
By promoting the profit motive past a merely utilitarian means to an efficiency-optimizing end into a matter of national identity and point of distinction vs. in particular the USSR, we've shifted our culture beyond what's really rational. We (as a society) don't merely respect and understand the profit motive; we see it as a sign of merit - and significant enough merit that "winning" on that scale excuses a lot of other bad behavior.