The EU recently persecuted Switzerland because because bureaucrats in Brussels believe that Swiss market-friendly model of cantonal tax competition is a form of state-aid.
Here is a report by Tax-news.com:
"The European Commission is basing its legal argument against Switzerland on the latter's alleged breach of state aid rules, which, in the EU, are in place to prevent member states from favouring certain companies and industries with beneficial tax rules and subsidies. But the Swiss say that the EC's arguments rest on shaky very legal ground, pointing out that the country is neither an EU member or part of the Single European Market, nor party to the competition regulations of the EC Treaty, including those on state aid. Moreover, Bern insists that even if the tax laws in question were covered by the 1972 Free Trade Agreement, they would not fall under the EU's definition of state aid, because they do not favour certain companies or industries."
Swiss Federal Council issued a report on state-aid to companies (link). Claiming that regional (cantonal) tax competition is a government aid is a myth. In fact, EU countries such as Germany and France maintain a bulk of government-owned enterprises.
An example of government intervention into the course of market forces is EU's Common Agricultural Policy (CAP) massively endorses income redistribution from European taxpayers into the hands of agricultural lobbies. Another obscure example of statism is EU are subsidies as a "third-party" payer problem.
The majority of EU's budgetary means and fiscal expenditures are funded directly into farming in the form of subsidies. 65 percent of all EU subsidies go to manufacturing, causing disallocation and the distortions in output and productivity. In addition, there're vast sub-funds whereby subsidies and handouts are granted to enterprises in the EU.
On the other hand, there is no such thing in Switzerland. Even more, Swiss government does not penalize businesses competing in low-tax jurisdictions compared to EU's expanding of the power of government such as efforts to establish tax harmonization.