Quoted from lllvjr:
That's where lots of the money went.. Lawyer and patents
patents yes, fees are fees. As far as lawyers, you'd be surprised what clients will take as payment, it's not always money.
Also John is one of the most frugal people I've met. While I won't deny rent isn't free (he probably could have developed a lot of this at home), and this timeline is ridiculous, don't think he's spending money like water.