The other fundament part missing from the equation is the technological advantage missing for 8K. When 4K came out the Technology also moved forwards with the introduction of Higher Bit depths, HDR and improved Colour Gamut soon after, whereas what has improved with 8K?? No more Colour coverage...
Also in the UK the LG only has BBC iPlayer, whereas the Q90 has all the catch up services, plus the LG has issues with its VRR capabilities the Sammy does not
The big problem with the Sony is no HDMI 2.1 features except eARC. Bit of an own goal when you consider the amount of PS5s I am sure they are planning to sell. No HFR, no ALLM, no VRR 🤦♂️