And yet it is a staple of English law. Further, it's common in English law for a judge to punish frivolous lawsuits.
And in the US we have a system that produces tens of thousands of hungry lawyers every year, many of whom simply turn to tort law as a arena of easy pickings. Find a "injured" plaintiff, offer your services for free, and get a third of the settlement. That's how it works.
One of the most unpleasant aspects of doing business in California is that it may be an "at will" state for firing someone, theoretically, but in practice, it is very much not. We've found that in some cases it costs less to pay a shitty employee $10k to $30k to take a hike, rather than fire them and pay endless lawyer and court costs, with no conclusion.
CA and the US are litigious societies, and it does little for society as a whole. It also vastly increases insurance costs.