Maybe for English-speaking countries. But iZettle is market leader in Europe and LatAm, so the counterargument could be that iZettle is more visually memorable

Maybe for English-speaking countries. But iZettle is market leader in Europe and LatAm, so the counterargument could be that iZettle is more visually memorable and easier to pronounce than e.g. Square if you are not a fluent English speaker.