> My dad could hand me down his old Mac and I would be able to lawfully download and use it without spending a dime. You would be able to lawfully download it,

> My dad could hand me down his old Mac and I would be able to lawfully download and use it without spending a dime. You would be able to lawfully download it, but you would only be able to lawfully use it on an Apple-branded computer (which, by definition legally speaking, requires a computer that was legally manufactured by Apple). Look up Apple Inc. v. Psystar Corp., a company that tried to get around Apple's EULA for this exact clause using every gymnastic of law imaginable. They lost multiple appeals, were charged millions in damages, and went bankrupt.