Really? I wasn't aware, don't keep up with the unlocking scene. That's neat from a technical standpoint. You dont have to dial 112 or whatever it is I read about, then airplane mode multiple times? I've also been told doing that dials emergency number and is illegal. But I don't think the average person who needs unlock and seeks out the cheap $2 gevey solution cares about legality, they just want their phone to work overseas. But, I might just be assuming.
Also, good point about business travellers. Still, I think if business travellers are weighing the pros and cons of roaming internationally for a few days or going with local plans (because it's more convenient to not bother looking into alternatives to stick with roaming or on the other hand more cost effective or better service/offerings than the AT&T negotiated roam carrier -- though, a lot of places I've travelled have much better service than states so I would imagine this would be moot. in Vienna, using 3 Dreis, I got 1000 min/400 text/1GB for like $18 prepaid. Also, I was always in the city where coverage seemed really good from all carriers, so who knows), I don't think unlocking is going to set them overboard. Especially if you're there for one day, of course it's not worth looking into the alternatives and you sohuld just roam if need be. They seem like two extreme paths. And a business person, of all people, should be able to effectively weigh in which one is more practical and/or affordable to their needs without AT&T restricting options.
Also, one of my friends using her Verizon world phone blackberry said she paid like $70/month to have intenrational roaming in all of Europe. Man was that handy when we had to find hostels in other countries without pulling out a map. If AT&T offered something like that, I would have gone for it. Dreis only really worked when I had a layover in London and Austria, where I got my Austrian number. I couldn't even imagine how handy it would be (and worth it) to be on that Verizon intenrational plan with an iPhone. Maybe I ought to switch, when I have to start paying for the bills and need to go overseas for business or vacation.
another example of how unlocking is benign from AT&T's point of view: if i had a locked iphone 4, needed data and saw that it's $5 for a 1gb month plan, but was only going to be there a few days and knew i needed a decent amount of data to keep up with the news and emails, I'd use an older blackberry for checking things.
BUT... if i had an unlocked iphone, i'd just be using iPhone instead of a crappy BB with a local prepaid plan and would be self-marketing for Apple by showing my bling bling phone off in public in a country that might not be as flooded with iphones
Everybody wins from unlocking, all except those who are profiting from 'alternative' unlock options.