> For competitive purposes, a monopolist may use forced buying, or "tie-in" sales, to gain sales in other markets where it is not dominant and to make it more difficult for rivals in those markets to obtain sales. This may limit consumer choice for buyers wanting to purchase one ("tying") product by forcing them to also buy a second ("tied") product as well.

Teams is free, whether it’s obtained with Office or downloaded separately.

Giving away a product for free doesn’t violate anti competition regulations.