"Openness is great, and a strategy I normally applaud: No single vendor is likely to be the best, so openness allows a broad range of suppliers to compete and differentiate so the best can emerge. The closed strategy makes sense only if you are the best. That is what Steve was."
To an extent I agree but I think Apple was perceived as being closed for very different reasons. First, although Apple is not known for championing open systems it did develop WebKit and make it open source. WebKit is the core of Apple's Safari browser, Google's Chrome, the browser on the Kindle and Android. So that's quite a major contribution to the open source movement I'd say. I'm not sure if Apple is closed in the same sense as the opposite of open source. I see Apple's so called "walled garden" as being a way of ensuring that users don't get really crappy apps on their devices. Apple is vetting them for quality and since that costs $$s it takes a proportion of the apps sale price (zero if the app is free).
I think Jobs was all to well aware of the chaos that an unregulated market in software had caused in the Windows ecosystem and did not want that repeated on iOS devices. It's particularly important that your cell phone doesn't crash or contain spyware. I'm sorry but as more naive users buy computers they do need protecting from some fairly unpleasant people out there on the internet and that doesn't just mean anti-virus software. Somebody has to vet the applications people may be trying to install on their machines. Apple have taken it upon themselves to do that and it's not unreasonable that they get paid to do so. Remember that walled gardens were made to create a better micro-climate inside the garden than out.