The problem is that you need to show, not tell, the players how the world works. This is incompatible with 5e pacing. Players really don't have to accomplish much in 5e to get to high levels in relative terms of how much they accomplish. You can say something in some splash of text somewhere, but when visiting a few towns, clearing a couple smallish dungeons, and rescuing somebody's cat from an owlbear takes you to 8th level, you do not feel the same as somebody who got to 8th level by, say, clearing the Temple of Elemental Evil and banishing Zuggtmoy back to the Abyss over a full year of play that included multiple near-TPKs and the loss of a dozen friends. If you want people to have lands & titles at 10th level, then they need to feel like the sort of people who have earned lands and titles. This doesn't work when a few weeks ago, they were hobos.