Imagine a doctor, personally responsible for the treatment of hundreds of people and therefore responsible for the actual futures of thousands of people in their lifetime. How much do you think that individual should be paid?
In a private healthcare system, they should (and can) be paid a fortune. Millions, potentially, particularly in the US. In a public healthcare system, acting in public service, their salary will be relatively limited. It's why a squaddie gets paid £17,000 a year even though they may be killed in the service of the country. Of course, even in this country the doctor can supplement their salary to a tremendous degree with private work. But then again medical professionals in this country understand that they are not engaged in a commercial, performance related endeavour whereby renumeration is dictated by profit made. If they did, then that's fine by me. It just means a private healthcare system.
My point was made in response to the rather bizarre suggestion that wealth automatically aggregates in the wrong places, and therefore should be forcibly redistributed by Government. When the financial futures of millions of people in the form of pensions, for example, do actually rest on the incentives of the market, and the abilities of the financiers in charge of those pension funds who are, whether we like it or not, incentivised by their remuneration, then that's a particularly stupid approach. Even more so when the mechanisms by which those investments gain value may well involve offshore arrangements that take advantage of domestic tax regulations. Thus, by seeking to close those loopholes you'd simply be harming other people's future financial security. I find it amusing that the pensions of the generally most left wing cohort in this country, namely university academics, are in the hands of rapacious city financiers earning millions.
And lastly of course, there is the common assumption that more tax revenue equals more 'stuff' for everyone. If a Government acts along ideological lines, then the funds it gathers will be disbursed accordingly. In the case of the Conservatives, it would be subsidising wealth creators or industry, for example, or trying to address the balance of payments deficit, rather than increasing benefits for example.