I do think it is a combination of factors.
For the Eastern market it is about imports. CD's are stupidly expensive over there so they have to entice people to buy within their boundaries, hence Japan always gets extra tracks, etc.

For the european market, I'm not sure. CD's in UK have never been cheaper and I don't think we are getting the DVD to prevent us from shopping in the USA or elsewhere.

I do think the USA is being punished over this, yes, they did get extras like the QVC thing, but I have that and have you seen it? It aint that good! I'm sure they would rather have the extra tracks or dvd than a B movie video set put to the music of a B standard album!

I am wondering whether there is a historical reason still at work here and a commercial reason from the record company.

Historical reason - USA still being punished for deserting the band during the These Days and Destination Anywhere era when sales in the rest of the world stood firm or went up. I have seen interviews with Jon and this really got to him

Commercial reason - Bon Jovi's record comapny is fairly clued in to just how diehard a lot of the core fans are. There are people who will spend more money getting the album from somewhere else. It doesn't matter where you spend it, it goes to the same multi national company, so by segmenting the world up into regions and giving each region a different verison they are hoping we will buy at least 2 and maybe even 3 of the versions. Its cold and calculating and I don't know of many other bands who do this, perhaps there are?

Just get on ebay and buy a copy of yokohama, then you wont feel the need to own the tracks! The dvd is more problematic because they could try and regionalise it.