What will happen to T-Mobile if we don't change plans?

What is going to happen to tmo if we dont change plans over time?

My understanding is T-Mobile and dish have a legal binding contract for the next several years when that contract runs out and if Dish and T-Mobile have not made up from their differences the most likely thing to happen is My Choice goes away and those lines are eith force to the current new plans or the user takes their number to another carrier

Ok thanks that is what I thought so going to sit back no rush,
to change . Both ATT ,TMO are very good in my area.