65According to well-established case-law, a restriction on the freedom of establishment is permissible only if, in the first place, it is justified by an overriding reason in the public interest and, in the second place, it observes the principle of proportionality, which means that it is suitable for securing, in a consistent and systematic manner, the attainment of the objective pursued and does not go beyond what is necessary in order to attain it (judgment of 6 October 2020, Commission v Hungary (Higher education), C‑66/18, EU:C:2020:792, paragraph 178).
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