Of course, a Ferrari is a physical thing. But every Ferrar sitting in a showroom is one that nobody has been willing to pay for yet. Does that mean you should be able to take it for a ride when the dealership closes at night as long as you have it back there by opening time the following day (ignoring depreciation)?
Copyright law was, until quite recently about granting a monopoly on the large-scale or commercial use of a work. At-home copying for personal use was generally legal - even explicitly protected by law in some cases[0]. Same with multiplexing video on different screens, creating backups and skipping commercials.
DRM and legal provisions forbidding its circumvention change the rules quite a bit, stripping away significant rights from consumers. Losing rights one once had might well be grounds for a feeling of entitlement.
[0] https://en.wikipedia.org/wiki/Audio_Home_Recording_Act#Exemp...