it's relative but you can live pretty much any lifestyle you want on a 100k a month. Yes this means chartering a yacht instead of buying one, flying fractional instead of owning the jet, etc... (which also means less headaches to deal with)
But for 100k a month you can experience almost anything any billionaire can. Remember you wanna buy experiences not "things".
You can have every lifestyle experience you'd ever want on 100k a month.
you need at least another 50k a month for new projects or if you're time is fully committed then at least 50k a month to preserve.
so if you assume 50% goes out in taxes, we're talking 300k a month... or 3.6 million a year income before taxes.
This also assumes you're project/s are fully capitalized. you must reinvest everything or as much as possible until your project/s are fully capitalized. You must be willing to live well below your means in the short term to build your potential income faster.