London real estate is notoriously expensive and it's not a practical way to measure wages.
The top rate of tax on earnings over £150k (until the pound crashed recently would have been around $200k) applies to roughly 600,000 workers. The UK has a population of 68M. If you earn upwards of £150k, you're rich.
> In my mind that salary does not make anyone rich, I mean that's a low to mid level engineering salary in the US. Basically almost any US professional (lawyer, doctor, engineer etc) is going to make that or much more.
When your world is tech and you're familiar with the salaries on offer, it's easy to lose sight of life for people who aren't inside that bubble. Your point of comparison is wildly skewed.