I do believe we will transition towards it and hit a lot of walls along the way while we find acceptance and mass adoption but I believe well eventually hit a point where most of those walls become insurmountable and thats when the alternatives start to show up..Well start to see various coins battling for the top
i disagree. "hitting a wall" is not going to make altcoins rise up. altcoins need to be good and useful in first place to be able to rise up and sustain that rise.
as an example you can look at something similar that happened last year. bitcoin started having higher and higher transaction fees. that was one of those "walls" you are talking about. altcoins started getting pumped because of it but then they started showing their real faces with all the problems that surfaced because of that small increase in their usages. and now as you can see they are all going back down to their real low values because they couldn't sustain it.