Where I live 1M would actually make a pretty big difference. I'm lucky to be in one of the more affordable parts of the US. Even after I lose 30% of it to taxes, it would still get a lot done for me and allow me to supplement my other traditional investments. I agree though, 10K per month would be an awesome passive income.
Yes I agree it would get stuff done, but would not necessarily put you in a position of retirement or comfort for very long. $100K would make a difference to anyone for a month or two or three lol, but it would run out much faster and won't stretch like it could have years ago. In some parts of the world it would be seen as a small fortune only if you stayed there and did not think about moving elsewhere.