獨霸

to dominate (a market etc) / to monopolize

alone / independent / single / sole / only

variant of 霸[ba4]

hegemon / tyrant / lord / feudal chief / to rule by force / to usurp / (in modern advertising) master

to exercise sole hegemony (idiom); to dominate a whole area (market, resources etc) / to hold as one's personal fiefdom