They didn't need to put this in, but they did;

In case of non-compliance, the Commission can impose fines up to 10% of the gatekeeper's total worldwide turnover. Such fines can go up to 20% in case of repeated infringement. Moreover, in case of systematic non-compliance, the Commission is also empowered to adopt additional remedies such as obliging a gatekeeper to sell a business or parts of it or banning the gatekeeper from acquisitions of additional services related to the systemic non-compliance.