One of the greatest unfairnesses in the tax systems in many countries (certainly at least the US and UK) is that income from "investment" (which generally is money made from having money or owning thing, though there are often ways for freelancers and small business owners to use it to have their income from work look like the income of business ownership) is taxed less than income from work.

It's "interesting" how the countries with the loudest "strives vs skivers" and "meritocracy" bullshit from politicians, generally penalised people more for working than for sitting on their hands whilst their fortune naturally grows through rent-seeking.