We are already one price rise behind the US, so who knows, it could be a £2k increase that we are due?
Summon was part of EAP (enhanced autopilot) that many people happily paid ££££ for. And that was on top of paying ££££ for autopilot that is now 'free'. The FSD part of FSD is currently (or if ordered with EAP on a new vehicle) 'only' £2200. The difference now is that EAP and FSD is bundled in the one package. So in the pre 'FSD only' FSD days, you could have had summon and the rest of EAP for todays equivalent of £3600, and very many people were happy to pay that. Also worth noting that FSD gave HW2.x owners a free HW3 upgrade, something that early Model 3 owners in UK only got by a matter of weeks.
Thats a lot of FSDs! Speaking of which, im not really sure it should be called FSD because, well it just isn't!