I don't think there is any country where filing in court to get a judge's order is "simple and cheap", and in particular not fast.
Injunctions can often be granted without ever actually filling anything but requesting it directly to the judge - you can have one in like 15 min. It would cost a few bulks in my country ( eventually for free if the part is an individual ) plus the lawyer fees are not that high - the thing in here could be made for US$100 or less if you have a lawyer you use often ( depending on the situation an individual can use a public available lawyer and pay nothing for all of that) - and not much more than that on most parts of EU.
IDK the practices under the crazy US legal system, but on jurisdictions under Civil Law most business have either:
- a contract with law firm where they pay a monthly value, like a subscription, or
- bigger than medium business often have lawyers hired ( employee ), bar France because the Barreau de Avocats does not allow lawyers to be hired. In France a business can have a juriste hired but not lawyers - but I think in the US Law that difference does not exist.