Please read my disclaimer. I'm not from the US, and my experience is based on accountancy in my own country. No company in my country complies with SOX, because that's a US law and doesn't apply to the rest of the world.

While large corporations in this country are audited, they use the large auditors who have in fact been found to have done some pretty dodgy shit that a small auditor or accountant would not have gotten away with, while the regulators turn a blind eye. The large auditors also enable large companies to use tax loopholes that are not available to small businesses, so my point that closing the loopholes would make a big difference stands. And sure, the smaller accountants and auditors do this kind of crap too (corruption exists everwhere) - but the difference is that they're held to account when they get caught. It is factually the case that those with more money don't have to play by the same rules as everyone else.

I'm also not an accountant anymore. Did it for ten years and came to absolutely hate it as more of my time was spent on larger businesses. I loved working for the little guys, as overall I found them more reasonable. I never worked on any public companies, but I did work on a few charities (which have many similar rules to public companies in this country), and the corruption amongst the leadership was directly proportional to the size of the charity. There's one major charity I won't donate to anymore because I know just how much corruption there is at the top.

Plenty of known loopholes for tax avoidance.

Used to work for a company that made killer profit, but 85-90% of it was funneled to the parent company to pay for the leverage of the PE investors who bought the company for 10x their EBITDA. Say we made 100 million EBITDA, the official result was around 10-15 million, and was the basis for our taxation.

All this money was paid as various fees and licenses and was calculated into the budget the year before. We had specific goals that we needed to hit and, and bonus payment was based on these goals. Our collective bonuses was a drop in the ocean compared to the result of the company.

The parent company in Germany then had at least three levels of holding companies, all incorporated in Luxembourg, between them and the owners.

Was a fun place to work when we got sold as suddenly there were som extra rounds of bonuses to go around as carrots for us to stay on during the sale, and even more stay-on bonuses for those who staid on after the sale.

According to my boss at the time - the perk of being in a PE backed company.

Wouldn’t be surprised if they’re up for sales again next year.