No, it really is that easy. I'm an accredited iOS technician, although I'm not the parent poster. The "Apple Way" involves running a bunch of diagnostics, logging it all in their service portal, ordering parts from them directly etc so obviously takes longer. However if you gave me an iPhone 5 or 6 and a battery then five literal, actual minutes later you'd have an iPhone with a new battery installed. 7 and 8, maybe a few minutes longer as they have an adhesive around the frame. Easy enough to apply but a pain to remove beforehand with tweezers. Apple actually make it fairly easy once you're in - there's battery pull tabs that remove the adhesive beneath the battery. Those don't feature on many Android phones, the last few I repaired I had to carefully wedge thin bits of plastic under the battery to remove it without bending.

Also here in the UK, there are car dealers who do have the appropriate licences for offering credit, and do use the same remote immobilisation devices for use when payments are missed. I sold an old car to a local dealer, who specialised in car credit for high risk borrowers - typically charging 20% APR or more. It's quite a lucrative business model it seems - I sold them £4000 (CAP Value) worth of Ford Focus for £2800 (I needed rid of it, it was beginning to go wrong in a very expensive way) and a week later it was on their website for £4995. If the loan was repaid in full at 20% APR, that car they paid me £2800 for would make them £7000. Anyway, I Googled them when planning the sale, to see if they were at all dodgy. There was a newspaper article where they'd disabled a car they'd sold someone after a single late payment, and were charging a reinstatement fee to turn it back on. I imagine the car I sold them also went out the door with one of these devices.....

It was called the Amiga 4000 if you wanted to play the same games - the A3000 had the ECS chipset, the A1200 had AGA which was matched by the A4000. Sadly, the A4000 included a LOT more than just an A1200 in a pizzabox, so it was many times the price too. I agree with the idea that if there was a 68020-based A1200 Desktop model, with the same expansion potential as an A1200 rather than the 030/040, Zorro and CPU slots of the A4000, it would have been a huge success.