Yeah, aint it great. you have a choice. When you invest your money in a open system you can actually use it if you change the gfx card to another vendor.
What is so open when it is my money you are talking about? I can purchase Nvidia 3d vision and go with my Nvidia video card, or I can purchase a 3d kit from a 3rd party vendor and go with my Nvidia video card. What is the difference? Yes if I have brought from a 3rd party vendor I will no longer be limited to Nvidia video card, but wait a minute, what if something goes wrong?
You don't have the experience, but most wow player with 3d have. Nvidia decided to roll out a new set of drivers that broke modded UI in WoW. Now what? Those who have experienced the problem will know the name Andrew Fear, someone who works for Nvidia and keep QQers in Nvidia's forum calm. Yes, the issue took about half year to resolve. Many have stuck with older 3d drivers or tweaked the game and the driver to make things work mean while, but Nvidia 3d vision user knows where to look for solutions.
Let say you are on AMD with a 3D middleware and things broke after a new cat 10.50, where will you go for help? Is it the middleware? The game? or AMD?
Nvidia graded the quality of games that supports 3d. If a game is graded "3d ready" but in fact isn't, waves of people will filled Nvidia's forum and start QQ. This is stupid as it generates unnecessary hate and work, but Nvidia is still doing it. Why? Well they offer customer service and will fix problems as they see it on their product. These is what a 3rd party vendors do not offer as they do not have control over video card drivers.
I will say this upfront. AMD will not support 3d anywhere near good as Nvidia, they simply cannot. They don't have control over the 3rd party, or I should say, they don't care. If 3d broke with AMD video card, then the problem is on the 3rd party vendor as they are responsible to their product. The same argument can be used on Nvidia+3rd party, but Nvidia is responsible for Nvidia 3d vision.
Remember, shall your AMD+3D kit fail to perform or breaks for whatever reason, AMD is not responsible. You can thank AMD.
Your definition of "more" is being locked to one vendor. Which is fine for you, since you get free hardware, other people might prefer the option to pick from either company going forward with their product choices.
To begin, the word "lock" is not an appropriate word in this content. "Support" is a better word. Nvidia 3d vision, cuda, and physX are all supported by Nvidia, and AMD does not support them. It is as simple as this.
The word "lock" in such content is introduced by AMD's PR. Different hardwares have different drivers. There are universal drivers(which in AMD's terminology, is open), but usually they won't be able to utilize special features. I can't expect a driver from Cannon works on Brother's printer as bother has their own driver. Cannon's driver/software doesn't lock brother's hardware. Cannon's driver/software doesn't support brother's hardware. Do not be confused.