Why do industries like electricity or cable TV have just one or two major firms

Why do industries like electricity or cable TV have just one or two major firms

Why do industries like electricity or cable TV have just one or two major firms while other industries like restaurants or clothes have hundreds or thousands? What might be a general difference that leads to some industries having many firms while others are dominated by just one or two?”

200-300 words

Solution preview for the order on why do industries like electricity or cable TV have just one or two major firms

Why do industries like electricity or cable TV have just one or two major firms
APA

293 words