Maybe it’s the (in the British sense, mind you) republican in me but I don’t get the obsession with inherited power. Sure, Luke’s dad was a powerful force user, but we have no indication that Sheev Palpatine, Obi-Wan Kenobi, Yoda, Mace Windu, Ahsoka and so on came from any family background of using the Force.
Also in TPM Qui-Gon implies to Anakin’s mother that the Jedi screen for children in the Republic to see if they’re Force-sensitive or not, implying they look for children anywhere in the Republic, not bloodlines (“Had he been born in the Republic, we would have identified him early, and he would have become Jedi, no doubt…he has the way. But it’s too late for him now, he’s too old.”); and in AotC, it’s stated having personal attachments would get Anakin expelled if caught.
This creates the inference that most Force-users don’t come from powerful lineages.