Some people pay a lot, others pay comparatively little.
We're talking here about the tax base, We're talking here about over the years a quite significant shifting of the tax burden from high-wealth and corporates to PAYE taxpayers. This is serious, it's systematic, and it's on the increase. Especially when the tax officials are overworked, underpaid, and doing their own photocopying. There's money to be made in the poorest countries, where the big western firms compete for development projects. These are often 'high risk environments', where local corruption can destroy business reputations.