> Should free services be heavily scrutinized as an anti-competitive dirty marketing tactic, then? Perhaps if you offer a free service, you should be legally r

> Should free services be heavily scrutinized as an anti-competitive dirty marketing tactic, then? Perhaps if you offer a free service, you should be legally required to either post a notice "this service may switch to a paid version at any moment with a 30 days warning", or make a public promise "this service will be provided for free until 2030" (or any other year). You are allowed to increase the year later. In the former case, you could be sued if the notice is deliberately hidden. In the latter case, not providing the free service would be considered a breach of contract.