The vast majority of Europe is either Catholic or Lutheran or Orthodox. A handful of American-style denominations/congregations started up in the past 30 years is not a "marketplace".
Africa, Asia, and S. America are the centers of great Christian expansion, and that expansion is broad rather than narrowly concentrated in one denomination.
S. America/Central America has been all-Catholic for 500 years. Its humorous to see you term the recent invasion of American Evangelicals "great Christian expansion". Your true colors shining through.
In east Asia, there is real competition in S. Korea and parts of China. Most Asian Christians are in the mostly Catholic areas of the Philippines and India, as well as in Vietnam.
Africa is bifurcated between nations where most Christians are Catholic (French, Belgian, and Portuguese colonies) and nations with your marketplace (a number of former English colonies).
In each instance you demonstrate that a marketplace of ideas is present.
Does that mean you agree?