Both my grandfathers (born in 1923 and 1928 respectively) came from very poor working class families. One from a South Wales mining community, the other from the East End. Both did well for themselves, both bought large family homes and raised three children and had a non-working wife, and both eventually died leaving large enough estates to pay inheritance tax.
Their children and grandchildren (including me) have benefited from their hard work and ambition, no doubt about it. But I have friends whose parents and grandparents had no wealth to pass on. I am not better than them. I don't even earn more than them, in some cases.
My dad is intelligent and went to university but was not particularly ambitious and was definitely underpaid for his entire career. He was able to buy what is now a very valuable house using a £5,000 loan from his dad (about a 25% deposit on the purchase price) and getting a £15,000 mortgage based on his starting salary as a graduate trainee. As far as I am aware he never once asked for a pay rise, and his salary and career progression stagnated for the next 30 years.
In order to lend me an equivalent sum (25% of the value of the house my dad bought in 1979) he would have needed to find £150,000 in cash (three times his gross salary), not £5,000. But even then, it wouldn't have been enough, because I wouldn't have been able to raise a mortgage for the remaining £450,000 on my salary alone, despite the fact that my salary was actually higher than his by the time I was in my early 30s, i.e. getting on for 10 years older than he was when he bought that house.
If you don't have family money, then even if you have a six figure salary it's all going to go on buying and paying off a pretty ordinary house. School fees and skiing holidays are probably still out of your reach, and accumulating wealth to pass on to your children out of that salary probably could not be further from your mind right now.
I have a high salary (comparatively much higher than either of my parents have ever earned), AND I have had help from my parents towards my house deposit, AND I went back to work full time when my son was 7 months old and will do the same after this maternity leave, and I still can't afford the kind of house my parents bought when they were much younger than me, on one salary.
People need to get it into their heads. Salaries are not the issue here. Your salary makes very little difference to whether you are wealthy or not. Earning a decent salary might mean you don't have to choose between eating and heating, or that you can absorb the cost of living increases more easily than those on lower salaries. And that is not to be sniffed at. But unless you are doing something like investment banking, it won't make you rich.
And that is a problem. You should be able to create wealth from a decent salary without handouts from your family. If people can't do that, there is no social mobility.