Tim Höttges has used Deutsche Telekom’s annual shareholder meeting to reiterate the need for telcos and OTTs to play by the same rules.
Specifically, the CEO called on providers like Facebook and WhatsApp to support "free competition".
Höttges said: "Although providers operate on the same market, the same rules do not apply. Competition is only free when it is also fair.”
As part of the European Commission’s Digital Single Market (DSM) reform, unveiled earlier this month, Brussels said it would to look into creating a level playing field between the two groups.
It has promised to report back by the end of next year.
Höttges said he did not want to see more market controls but urged regulators to adopt “a wider definition of markets and not continue to limit themselves to structures where the market boundaries are identical with national borders”.
However, in a wide ranging speech, the CEO did call for regulation in terms of European data protection.
Höttges said: "In a digital world, digital dignity must also be inviolable."
Brussels hopes to get its proposed General Data Protection Regulation, which seeks to eliminate certain regulatory inconsistencies around the collection, storage and processing of personal data, onto the statute book by the end of this year.
The Commission is also reviewing the e-Privacy Directive as part of its DSM reform.
Höttges made his comments as he revealed total shareholder return in 2014 had increased 11 percent, which means that DT’s stock outperformed Germany’s Dax and Europe’s Euro Stoxx indexes.
Last week, the operator reported that Q1 revenues rose 4.7 percent on an underlying basis.