I like steve Rogers, he's why I like Cap. Plus, there is no way falcon as Cap could sustain a movie,
Why do you say that?
Because he's scared of change.

Oh, yeah, because replacing Cap with Falcon must just sound like a license to print money to the people making the Marvel movies. Maybe they can have Pepper permanently become Iron Man for Iron Man 4, and then Maria Hill can become the new Black Widow in Avengers 3.
The only person they may try changing Cap with is Bucky, and that would kind of make sense. They built him up in both Cap movies, so if they did replace Steve Rogers as Cap (which I still think is unlikely in any case), Bucky is the only one I see taking over. In the end, no one is paying to see a Falcon movie, no matter what costume you put him in. Ok, some comic fans would, but the general audience is there to see Steve Rogers kick butt, not his sidekick to take the costume and screw around. I'm not even saying they couldn't make a good story out of it, just that it would flop financially. Heck, Bucky would also be a real tough sell I think, and he's better established with the audience than Falcon is.
Admittedly, I'm totally against changing the character in the suit anyway. I like Steve Rogers, he's the only Cap I want to see. The draw of the movie is going to see a character I like. I'm there for the character, not the costume/secret identity disconnected from the character. If they found a good actor, they could replace Chris Evans as Rogers, and it could be great. But, with all the potential stories not just Steve Rogers but the Marvel U in general have to offer movie makers, I don't see Sam Wilson becoming Cap in the movies. It makes more sense to just recast Steve Rogers, and as a character he has a lot more stories to tell. I'd watch Falcon as a major character in a movie, and I think if they had him as a big character in a Captain America 3, it would be cool. But I don't see him becoming the headline character. He really was only a minor character in Cap 2 compared to Steve, Black Widow and Bucky, and while they're probably friends by the end Cap and Falcon aren't really partners or as close as Steve and Bucky were.
Nothing against the character or actor, I just want to see Steve Rogers when I watch a Captain America movie, and I don't think I'm in the minority. Its not like the comics ever last long when they give an established characters identity to someone else. They all go back eventually. People get attached to the character at the core of the story, not the suit. Sam Wilson in the comics will not be Cap for long, he'll probably revert back to Falcon when Avengers 2 comes out (same with female Thor), and I really don't see Marvel completely changing the Captain America movie brand by removing Steve Rogers from the role.