For years, buyers of tech could rely on a familiar trend - that older devices would get cheaper over time. That now seems to have stopped, or in some cases, completely reversed. Apple and Microsoft's Xbox have joined the firms hiking prices for devices and games consoles which are years old. They and other tech companies have pointed to the rising cost of crucial components needed to build their machines, laying the blame on AI. Compute-hungry data centres, which power AI, need more and more