I do not know what the solution to capitalism's problems is but I do know it's not communism. I also realize that rejecting capitalism doesn't imply embracing communism but in practice I don't see anyone suggesting any other alternatives to it.
With the rise of social-nationalism/right-wing activism again in Europe and elsewhere I sometimes wonder if this isn't just collective memory forgetting the horrors of the past that were brought upon by hate and simplification (to me most political ideals like communism and nationalism are the result of minds that refuse to view the world in the highly complex state it is in and are looking for simplifications/shortcuts), we are forever doomed to repeat those mistakes. :(