Tesla benefitted from being out the gate early with a EV. Buyers with green envy tended to ignore Tesla's obvious flaws and build quality. Overall, these cars don't seem destine to survive in the used car market well.
Second and third owners will most likely face the majority of problems and expenses. You have a highly technical vehicle that is subjected to the same types of issues any vehicle will face as it ages. Some components to repair or replace won't be cheap and I have yet to see a lot of repair shops even trained in Tesla or any EV vehicle.
I am hoping that the other automakers stick to using more off the shelf readily available parts in order to at least reduce costs and shortages.