The problem is not Everest but the people who don't know anything about climbing. Anyone (pretty much) can get up that mountain if they have a large enough convoy of people carrying everything the "climber" needs. Climbing is what you make of it.
Eh, not anyone. You have to be in decent shape, have some climbing experience, not be afraid of heights crossing those scary icefall ladders, and have a huge tolerance for discomfort to make it to the top. The low oxygen levels that high are no joke. I would argue running an ultra-marathon is a far easier feat.
Note how I wrote large "enough" for the sake of argument, i.e. this could theoretically be a team of 1000's of people and a budget of many billions. Money can't buy everything, but for an ascent of Everest it can buy a lot.
Altitude changes and general health of the climber will also determine if they get up the mountain... or back down the mountain. Money doesn't guarantee a successful ascent/descent.
But your chances get much better, especially on the ascent leg of the trip!