Sure, but if you're never told to leave the coffee shop or no action is taken to prevent you from entering again, say being told your banned, and you continue to walk in and use the coffee shop with no one saying anything, has your permission to enter really been revoked, even if the owner thinks, and only thinks, it has been?
FTA: "LinkedIn sent hiQ cease and desist letters warning that any future access of its website, even the public portions, were “without permission and without authorization” and thus violations of the CFAA."
They were formally told to leave the coffee shop and not return.
No, they were told to stop looking in the window. Can you ask someone not to look at the menu you posted in your sidewalk window? I don't think that'd hold up in court.