Perhaps this sounds odd, but I refuse to buy a game on a console if I can't have a physical copy, and I refuse to buy a game on PC if I can ONLY buy a physical copy.
Since backward compatibility and legacy support on consoles is, to be mild, questionable and patchy in recent generations I demand a physical copy for my money. Conversely on PC if a game is laborious to install and configure the chances of me playing it plummet making it a waste of money (as opposed to just playing something on Steam where the latest patches are installed). As for tablet games or on iPhone, I don't own either. Android gaming doesn't appeal to me as much as spending the same time reading on a Kindle.
I still buy physical books, if I enjoy one enough or think its worth having on hand at all time for reference, I'll possibly buy an ebook copy.
So, yeah, physical or digital content can be a dealbreaker for me depending on context.