Dh earns 200k pre tax (no 150k bonus though) and our day to day lifestyle is actually quite cheap. We live in a small rented house (London) because even with a big salary London house prices seem terrible value.
The biggest difference is that we save lots of money. 50-80k per year into savings. Dh doesn't expect to earn this much forever, so we are saving now. Would like to buy a small house outright outside London in future, and have a private school fund, both of which are looking achievable.
We've kept our day to day spending at the level of someone earning less though. I think it you start spending to your big salary day to day, you then become too reliant on that big salary.
Dh has a friend who also earns 200k and spends everything. No savings, no assets, they are renting. Some nice holidays, meals out, but nothing hugely ostentatious. You can go through money surprisingly fast!
This friend is prob at peak earnings now, so may struggle with reduced income in future, if spending that much is normal. That's why we don't want to "upgrade" our day to day lifestyle too much.
The other nice thing is that if you do want to buy something expensive as a treat, you don't need to save up. You just buy it. I really like that. We don't buy loads of treats, but it's great to have the option.