Technically yes, but it costs thousands per year for upkeep and again thousands plus 1-2 years of time to shut it down again.

After waiting 3+ months for the Finanzamt to respond.

In countries that have it. In Slovenia we have no such legal entity and so starting a business requires, at the very least, ~400€/month for a single proprietorship (unless you are already employed elsewhere already, then it's <100€) or even more for an LLC-type company (since it requires one fully employed person at a level above minimal wage).