@HendrikPfaff @Linkshaender @skuebeck
As long as it doesn't directly impact them, they won't care.
However, I switched my father to mint a few months ago after years of trying to convince my parents that windows was not good anymore. He loved it. So much simpler, less cluttered and less annoying. I let a friend use my computer for a while and my fedora+gnome setup and the ease of use convinced them to try it on their own computer.
People care about convenience. Microsoft and Google are evil, yes, but just as the frog being plunged in a cold water and slowly boiled, people have also not realized how *inconvenient* they have become over time. They also think there is no practical alternative so they are willing to put up with a lot of crap and a lot of potentially dangerous stuff because it's better than nothing, because they don't really think there is anything else they can do.
We won't convince them to leave by telling them how GAFAM are evil, we will convince them by nagging them with better alternatives. Giant companies have so much marketing money they are practically everywhere, we need to make better alternatives more visible and we need to make them look like a valid choice and not something that only tech people and nerds can use.