I don't have a list of specific examples to back up that claim, but I encourage other apple devs here to think about recent releases from that perspective.
a) it provides readers with a laundry list of things to go study independently
b) the book author can, given time and inclination, do the same study and improve the book
One of the first jokes I ever heard at a startup was "We'll give the product away and make it up on volume!" Changing the joke to "We'll pay people to take the product and make it up on volume!" doesn't make it less obviously ridiculous.
I'm amazed they were able to hire employees, let alone find investors. Doesn't make the guy's death any less tragic though.
The market already well served by iOS, Android, etc., is people who want to terminal OUT OF their phone and onto a real computer someplace.
What are the real-world tasks you expect to do with the former that you couldn't do, or couldn't do as well, with the latter?
There is in fact, a large risk of "no payout", or worse, a loss, if apple decides to argue about your billing (which they will). As a firm, you may end up having to pay your associates more than apple pays you, depending on how things go, generating a net loss for the firm. Your associates get paid well (particularly in the IP field), but usually this just about makes up for the large amount of law school debt they have (which can easily be $3000+ a month). Again not that they are poor starving people, but the salary differences you see often are eaten by debt payments and the fact that they work ridiculous hours.
On the direct "payout side", you are right that trademark work is not usually contingency work, but a lot of other work is, in which case the risk is immense. Firms are often fronting many millions of dollars in large cases, and all you have is the hope you will get paid on time. Your recourse if you don't is to sue the client, and then spend even more money, and either settle for 50% to not drag it out (the average time to resolve these cases is 7 years), or hope a judge doesn't think your billing is atrocious.
This risk is certainly less in the corporate world (in my wife's area, family law, individual clients can have something like a 35% non-payment rate, particularly in hard economies), but still there.
Again, i'm not saying lawyers don't make money, and aren't well off in a lot of cases, but to pretend that lawyers are somehow guaranteed "big bucks" in cases like this is just a fantasy. It's a business. Sometimes you do well, sometimes you don't. There are no guarantees, and there is always risk. Given the state of the legal job market and the legal world , if you want to make big bucks, running a law firm and taking cases like this is not the way to do it anymore.