Well, yes, typically subsidizing goods/services below the cost of production (or below the market-determined "fair value") is considered anticompetitive because it drives the fair competitors out of the market (as without the subsidies they can't compete) and then once achieve monopoly control of the market, the subsidies stop and the quality of service plummets and/or the price skyrockets.

https://en.wikipedia.org/wiki/Dumping_(pricing_policy)