radicalnan They are also rich because they use their wealth to continually lobby governments to influence policy to their benefit.
'Ordinary' voters who cast their votes in a General Election and then sit back and let politicians get on with 'running the country' have absolutely no idea of how hard rich people work to protect their wealth and accumulate more (well, not exactly, they pay other people to do it for them) and how they use their money to influence policy.
For example, many 'think tanks' are funded by wealthy donors looking to produce 'reports' which support their aims; nothing like an authoritative looking report to impress MPs and Ministers.
And wealthy people have access to decision makers. Look at Legatum, a so called 'think tank' which is pressing government hard for a 'hard Brexit'. Why? Because their stated position is 'disaster capitalism', they swoop in when a country is in economic crisis and buy up undervalued assets (including previously state provided services) and make a killing. They are rubbing their hands with glee at the potential opportunities for them if we go for a no deal or 'hard' Brexit and the economy goes belly up. The NHS, Education, etc, all there for the taking because the state won't be able to afford to run them any more. And we hear of them having lovely weekends with the chancellor at Chevenings! Jeez! What 'ordinary citizen' gets that sort of privileged access to a very top member of the government?
There is lots more of this sort of thing around. Very easy to find... and very scary...