Are they really remembering?
Or are they just making the same choice twice?
Some of the most useful programming books I've owned were from Wrox, especially on C++. Their extra effort to address programming in practice can be very helpful to someone who needs to get stuff done. (If I needed a regurgitation of the spec, I'd just read the spec.)
I rarely avoid books based on their publisher. Instead I look for books that are reviewed favorably by many people. And I look for reviews that tend to indicate that the book is the style and level that I'm looking for. Of course there are other criteria like date of publish, etc. Sometimes I don't even realize the publisher of a book until after I'm done with the book.
Basically I think pre-filtering based on publisher isn't a very useful way to locate the best book for a given scenario. Hypothetically if I found a Wrox book and an O'Reilly book that were seemingly very equal, I'd choose O'Reilly. But such a situation rarely happens -- I almost always have some other substantive reason to choose one book over another.
It's not true. Tech companies spam the USPTO with patent applications, taking the shotgun approach of hoping something, anything will stick. It is not terribly expensive to file patents, especially when compared with the amount of money that Apple can throw around.
It's not "some link I found." It's EVERY link I found. If you don't think that carries serious weight, then we have a philosophical difference of opinion about finding reliable information on the internet, not about prepositions.
It is not incorrect to end a sentence with a preposition. Citation: every single link on the first page of search results:
All seems condemned in the long run to approximate a state akin to Gaussian noise. -- James Martin