My DH was in charge of the IT equipment dept at a large IT multinational company. There they use only Macs, when there was a problem, they would just try to source a new machine, as getting parts is virtually impossible. Any purchases had to be planned out at least 65 months in advance, and it would sometimes take much longer than that. At times, because the situation is so screwed up here, they would fly new workers to a foreign country to be able to give them a macbook pro or air computer, as they could not even get those here!