You're right about the matter of wife and family, but not in way most people believe they are right about it. There is a wide chasm between finding joy in something, and feeling the compulsion to sacrifice for it.
That you find joy in your family is fantastic, if only because you've found something to enjoy. That your boss has been slogging away for ten years on his business is fantastic, as long as his enjoyment of is worth more to him than the things he's not done. So long as he or you don't regret it.
The important difference is between compulsion and choice; or even more dangerously, a choice that is made, and then justified retroactively as a compulsion.
It isn't worth itemizing all of the things people are compelled to, except that this list is a somewhat abbreviated version of them: get a good (read: easy) 9-5 job; spend money as catharsis; and let other people take the lesser worn path and, if they succeed, live their joy secondhand as much as you can. Also on the list: having a wife and children. They are defaults, and I'm not the first to say that defaults can be quite compelling, and can be just as easy to pass off as compulsions afterward.
Keep in mind, these being external compulsions does not mean that everyone does them for that reason. It just means you have to be more careful about how much of your desire is actual desire, and how much is just aimless drift.
Doing things just through compulsion rarely leads to enjoyment. It might have been when the compulsions weren't just compulsions, but a lot of what we feel compelled to do is fossilized wisdom from what other people would have thought would make them happy, and maybe it did for a few people. The rest are still waiting for the pay off, or have just given up and have become satisfied being content and comfortable.
I don't think most people have to settle. I think the problem is a higher level than the author gets at in his essay: even when people have options, they feel compelled not to pursue them. In the worse case, they feel compelled to destroy those options -- I've seen this happen, and it is tragic. I don't think it has to be this way.
I don't think you're doing wrong, btw. But your comment reminded me of all the times I've seen people sacrificing to compulsion at the expense of fulfillment; it seemed worthwhile to get those thoughts out there. :-)