• Apple's ecosystem (at least for business leasing) is sort of like the luxury car ecosystem: there are rather few models, and they're not very customized, but there's a dealership close enough to you that if there's any problem—any problem at all—with your [under-warranty] device, the idiomatic "solution" is to give you a loaner (the exact same model, with your data copied over) while they attempt to repair yours; and then either you get it back fixed, or you keep the loaner. Like luxury cars, this enables them to use nice-but-brittle components, under the expectation that nobody will actually have to put up with the component being broken, instead just being fed a steady supply of working devices. (Anecdata: my MacBook's keyboard has failed five times. Do you know what that means? It means that I've received a same-day replacement MacBook five times!)
• I think you're confusing "professional" with "ruggedized." Apple has never made, or claimed to make, ruggedized hardware. (The iPhone is waterproof, I guess?) Apple has no product category aimed at e.g. the ThinkPad's "techs performing maintenance on cell towers in deserts/jungles/swamps" use-case. Apple makes its desktop products like most companies make servers, or scientific equipment: intended for climate-controlled, central-air-purified conditions, to be operated by techno-priests who take the proper ritual-purity precautions before touching them. The Macs really are workstations, in the sense that they are intended to do their work from a designated station. ;)