What.
Why would you even say this. You would assume that the person advising Bisjac to keep up the good work and make more money is stupid and doesn't know how to save/spend money?
He still IS going to spend a lot. You don't think that driving across the country, spending money for women, paying for gas, partying, etc., will cost a lot of money? It doesn't matter how smart he is, he's still going to spend a lot of cash. He's already bought 12 tickets to give out to women; it's not like you don't expect him to buy more. Not to mention he said the trip was the "ultimate spontaneous money wasteful summer."
This is all his decision, but if he liked what he was doing, I would try to get back into it, not just party.
Of course his summer-long party will cost money.
But it's not going to cost him 5 million dollars. (If it did, I'd love to see videos).
He honestly has enough money to live happily from now on.
He can have a great time this summer and barely dent what he has.
Being jumpy here, let's just imagine he spends 1 million dollars this summer. He'd still have 4 million left to live on.
That is very very feasible.
Sure, I'd probably put some money in a Cash ISA or whatnot, where it can earn a bit of interest, but he doesn't need to. He still has his fridges full of Gold and Silver incase money ever becomes an issue again.
He has no need to work.
If he really wanted to, he could do so, I'm sure.
But bear in mind that Bisjac earnt this money from stock-trading. It took him a long time, and he only made so much money because he cashed it all in at once.
He didn't earn it through working a job. He has no need to work at a job any more.
If he wants to reinvest in stocks again, I'm sure he could. But if he reckons he has no need to, which I don't doubt, then there is no reason for him to do so.
Suggesting that he goes back to work, or starts stock-trading again is no better an idea than suggesting he happily retires. It is literally down to whatever Bisjac feels happiest with. And so far, he's suggested that he's happiest in having a fun Summer and then retiring.