People will tolerate a lot of shit as long as there is relatively broad-based prosperity, and "broad-based prosperity" basically means that "you" and your kids, if you do everything reasonably well and don't fuck up too much, can buy a car and a house and can afford kids (and grandkids) and maybe go on vacation occasionally. If you're a lucky ducky maybe even some nicer things sometimes!
Elite nepotism, which is certainly nothing new, gets a bit more angering and disgusting when the scraps that are left for the rest are fewer and fewer.