If there were only two airlines on every route, tacit collusion between them would probably keep prices high but not so high as if there were a single airline or an explicit price-fixing agreement.

假设在每条线路上都只有两家公司，他们可能会心照不宣的勾结，但不会使得价格高到犹如一加航空公司操控或者是基于一个明显的价格协议。

youdao

If there were only two airlines on every route, tacit collusion between them would probably keep prices high but not so high as if there were a single airline or an explicit price-fixing agreement.

如果每条航线上都只有两个航空公司飞机，那么他们间心照不宣地共谋可能会使票价偏高，但也不至于特别高，比如当只有一个航空公司垄断市场或者有一个明确的价格协议时。

youdao

But it seems unlikely that Britain's competition regulator will rubber-stamp such a price-fixing agreement.

ECONOMIST: Ticket touts are making powerful enemies