The main problem is that the system is inherently unfair.
Let's say someone has rapid decline dementia. They spend 18 months living with family, and then it is unsafe to do so.
They have sold their small property, worth £100,000 which they worked hard for and wished their child to inherit.
They have pensions and attendance allowance of about 1000.00 per month.
Before they can access any assistance, every penny of their capital has to be gone to a threshold of around 23,000. At this point an assessment is done. If it is decided that any capital has been used when there was a reasonable expectation of residential care being required, it will be regarded as deliberate deprivation of assets and contrary to popular belief there is no time limit on investigation, and if POAs are involved, criminal proceedings can be instigated.
Between the threshold of 23,000 and I think 13,000 the local authority will calculate an amount to be paid on top of all pensions until the lower amount is reached. After that they just keep the pensions. I think the logic is that it's enough for death related expenses.
CHC funding is not paid even if a dementia patient is non-verbal, bed bound, at risk of weight loss and bed sores and needs to be turned every two hours. People can last years in this state due to the diligence of a good care home.
Meanwhile, 18 months of caring for a person has taken someone (often, but not always, a middle aged woman) out of their career, reduced their employment prospects and being paid around 65.00 a week for the privilege. Carers could not be paid for because someone with dementia, while they are deemed as having capacity, cannot be forced to have them, and a care home is a feared prospect, and the family carer would have to be stone hearted not to step up.
It is the people with the smallest assets that suffer most, and where a cap would help.
It should also be remembered that smaller inheritances can help boost the economy by helping people "level up" at certain points in their lives.
It's complicated, emotive and needs an overhaul top to bottom.