If you drive an R8 around, eat the best pizza you can and dress as Da Vinci, people will call you crazy and lock you up.
If you drive an R8 around, eat the best pizza you can and dress as Da Vinci when you $35,000,000 in the bank, people pleasantly refer to you as eccentric and like having you around.
and therein lies the problem - you have to have a job. which kinda precludes you from doing the rest of what you want to do (which mostlikely takes up time and money, for not very much profit, if any at all).
If it truly is his life dream, then sure - go for it without the money. But a lot of dreams turn out to not be so much fun after a month after all, and the big difference the cash makes is that you don't need to commit. Dreams change? Big deal. Dip into the savings and move/do something entirely different next month.
If you have the money you are free to chase "dreams" that you are a lot less serious about.
On the other hand, if it's something that really matters, that you really care about, and your goal isn't to make money but to somehow change the world, I can't see anyone taking the same perspective.
That being said, I haven't really seen any startups that do have a goal or mindset like this recently (other than perhaps watsi). That's a totally separate discussion, but still makes me sad.
http://www.paulgraham.com/googles.html
Additionally, most large, "world-changing" companies (GE, GM, ExxonMobil, etc.) are public, which is selling out to an extent (usually with good reasons, but it's still selling shares in the company).
I can't say for sure what I'd do in that situation, but I do know that the devil I know (me) is far better than the devil I don't (the company trying to purchase my company). I'd like to think that if I was still interested in the company I'd roll on along on my own. (If I wasn't, however, that's an entirely different story.)
I mean, if it was legitimately life-changing money, I could take the buyout, spend a year or two traveling, relaxing, exploring, enjoying the "good life" and looking for a six foot tall redheaded supermodel with a Scottish accent to be my girlfriend... and then, when I got bored with that, I'd have seed money for the next venture already in hand.
OTOH, how do you see your baby? When you pour blood, sweat and tears into something to that point that it's basically your life, how can you just walk away from that with some cash?
So I dunno... which is why I say I think I'd take the buyout, but I can't necessarily swear to it.
or with the newly found money, create a competitor to the startup you just sold! And this time, you don't need to sell out, because you already did on the previous one, and have FU money to truely realize your vision...
It's easy to condemn people for being realistic about their reaction to such a sum of money. Perhaps your scruples would prevent you from taking a massive payment to leave behind something you've created, but I think it's more likely you're trying to take a moral high ground that's not grounded in reality.
Do you still feel the same way?
Human nature is weird in a way, we feel better about someone telling us they will note sell a service, even if untrue, than someone coming out and being honest about it.