Well that's the beauty of it for the government, governing bodies, care providers and wider society.
When the shit hits the fan and news starts breaking about neglect and abuse that is down to lack of adequate staffing, the care staff left will be the ones who get the blame - it's always been this way and this will happen with this, for administering poor and dangerous care. The blame will be directed at the individuals who are there and that will divert opinion away from the fact that you can be the best, most well intentioned care worker in the world, the laws of physics dictate you can only be in one place at one time and lack of staffing is going to have a huge impact on welfare. It already does, it can't afford to get worse, but it will.
I will leave when it starts to, I'm not going to bust my chops, torn in 10 different directions because we are short staffed, and then be blamed for the lack of adequate care, for pence above minimum wage and being treated like society's skivvy and scapegoat.
There's a reason why there's no real legal limit applied to residents to staff ratio, and that's so staffing levels can be kept as low as possible without any come back on the decision makers and the care providers. It's up to the care providers to decide what is appropriate, because the guidance provided to meet the law is that staffing levels must be "appropriate" for the amount of people and their needs, because they are ever changing.
Care is a business, and what is always at the heart of business? Profit. When you have ways to save money and make more profit that is basically not policed, even though it leads to poor care, and the added bonus that you can blame someone else, there's absolutely no reason for businesses to provide adequate staffing levels.