Ouch, some of those reasons are too fluffy. There are some valid reasons, but some of those aren't. Some can't be adjusted, some can be improved with updates.
#1 Data encryption can be an issue. If the device is locked then it's hard enough to get to that maybe some other means of getting info out of the company should be taken. The mention about not allowing a corporate password policy can be trouble.
#2 Corporate email, may or may not be a problem, depending on the company. Not having wireless calendar syncing can be trouble.
#3 Third party software - more of an issue for corporate use, but this is ambiguous at best right now, if you need a device to do something different *right now* rather than wait a few months, then get some other device.
#4 Not offering remote wiping can be an issue, more so given #1
#5 Is just a talking point at the moment, little evidence to back that kind of claim. Lacking a physical keyboard might be an issue, but the reasons used are speculative, I don't think there are any *good* studies out on that yet. The only one I've seen only showed that there might be a short learning curve as far as I'm concerned.
#6 Carrier locking can be a costly issue, but I don't know how it compares to other smart phones. If you have a CDMA device, then you probably can't use it in Europe.
#7 The problem with the price is way fluffy. If it's replacing another device with internet access, then the device + service can be less than competing devices.
#8 "Sound quality is less than impressive"? If they mean in terms of call quality, the tests I've seen on the web show the opposite. If it's a question of music playback, that's totally irrelevant to how the device works with the business.
#9 I really don't know about the battery issue with respect to business use. I don't think it's a problem for most consumers, but corporate users might use them heavily enough that a spare battery might be desirable.
#10 seems to be a case of wanting to have it both ways, there's no proof that it's suitable for corprate use. There's no proof that the virtual keyboard is bad for a smart phone, but they threw that in anyway. They could have mentioned 802.1X instead and that would have stood on its own.