It's not that people WANT MMS, it's all most people can use.
That's a very different situation.
I don't want MMS. I've never bothered to use it.
Over time, more people won't use it.
What happens to "standards" is that they melt away after they aren't needed.
If someone has a phone with MMS and e-mail, and they want to send a pic to someone with, say, an iPhone, an increasingly normal situation, what will they use? MMS? No!
As more phones come with e-mail, as I've been saying, more people will stop using MMS.
It's going to happen.
It doesn't matter if a trillion MMS's are sent every year now, even if the number is still increasing. That increase will first slow down before it starts to shrink. It will take years, then it will be sudden.
Like the way digital cameras took over the photo industry. It was very slow at first, as the cameras were expensive, and not very good. As they got better and cheaper, people bought more of them. At first, people shot both film and digital, but slowly stopped shooting film.
Then, at a point when digital cameras both became cheap enough and good enough, film rapidly dropped. Today, some people still shoot film, and will for a while, but film is effectively dead.
MMS and e-mail on phone will follow that same track.
At one point well over a trillion photos were taken each year over the world with film. How could anything ever beat that?
The same thing was true for 78's, 45 and long play Lp's, cassettes, and will of DVD's, and CD's.
Standard B/W Tv, and now SD color are all gone, or rapidly going.
Who wouda thunk?