We are talking about the government penalising wealth creators (business owners), not people who have simply been born into money.
Ultimately it all comes down to exchange of value.
Being a carer is admirable and should for sure be better paid, but it is also a fairly low skilled job, the barrier to entry is low, there are many of them, and it seems that as a society we collectively do not value them enough to pay them better.
At the other end of the scale perhaps is a professional football player. We can argue that several £100k a week is obscene. And it likely is! But when you consider that the player makes the football club he plays for many times that in ticket sales, TV rights, sponsorship, increasing the number of supporters, etc, then the value that a player brings the football club paying his wages is huge. So the players renumeration is huge too by return. And should that player stop delivering the value that was promised (fails to score goals, does not perform as expected, or gets injured) then they will have their contract terminated, or be sold, and their market value to their next club will likely be a lot less.
The sad fact is that as a society, we value (in terms of money) the talents of a good football player far more highly than that of a good carer. But that is simply because (given that football is the most watched sport on the planet) the football player gets given an opportunity to generate far more value, to far more people, than the carer ever does.