My old person trait is that I think 'ghosting' is completely unacceptable and you owe the other person a face-to-face conversation.
Funny how Steam has been making sales and events around demos for a while (called Next Fests) and some games absolutely blow up out of nowhere thanks to them.
Also some people think FF16 having a demo was some weird, oddball marketing move by Square Enix, except they have been making "try now, continue later" demos for games since Bravely Default.