If it's defeatist, that's only because we've been soundly defeated. Sure lots of things have changed in the past and anything could happen in the future, but I've seen zero evidence suggesting that anything will change for the better in this area, and there is a growing collection of evidence to suggest that it won't.
History is filled with examples of companies getting away with this again and again, and shows us that only with massive amounts of effort has anything ever been done to improve consumer and environmental safety, and even then the few small steps we've managed to make toward change have been largely overturned or worked around.
Today nearly half the country has been successfully manipulated into thinking that strong regulation, government oversight, and holding corporations accountable for the harms they cause is a terrible idea. In fact, often it's the people who are most impacted by the environmental and biological harms created by these companies who would most likely oppose the environmental reforms and regulations needed to prevent them.
They're convinced that the economy will collapse if we make the changes we'd need. They're more motivated to vote against "frivolous" lawsuits and punitive damages than holding companies accountable. They consistently vote to weaken people's ability to seek justice, increase the influence of money in politics, and remove what few regulations constrain industry.
Meanwhile, even when most people are in full agreement that something needs to be done, bribery has been effectively legalized and regulatory agencies are either toothless or run by the same corporations and industries they're supposed to be keeping in line. Regulations are written by and for industry to prevent competitors and protect profits over people.
Yes, it's possible that magically one day things will change, and I genuinely think that would be a good thing, but I have zero confidence that it will because there's nothing to pin my hopes on. What reason is there to assume that things will improve?