The socially practical effect of working patent law is that it incentivizes inventors to publicly document their inventions by offering limited exclusive rights to the invention. To that end, an overly broad claim to hypothetical inventions which are not actually documented in the patent is detrimental and instead stifles innovation.
"Deserve" in itself is a meaningless word, a tribal signal. It's interesting to figure out what different people actually mean by "deserve" when they say it (followed the procedure, fulfilled the agreement, expended a sufficient amount of effort, suffered, were responsible in some way for its existence, is alive, has not taken from others, is loved) but there's nothing really there to base anything on. It's a political word.
The real world equivalent is "is entitled to."
edit: it doesn't help that the philosophical area that focuses on what people "deserve" is called "desert." It's one of the cases where where English sorely needs Spanish-style accent markers. "Desért."