This executive order is really comprehensive, it touches literally every economical areas where competitions are withering away. To be specific, I think this part addresses your concern on big telecoms.

  > (l)  To promote competition, lower prices, and a vibrant and innovative telecommunications ecosystem, the Chair of the Federal Communications Commission is encouraged to work with the rest of the Commission, as appropriate and consistent with applicable law, to consider:

The following also partially addresses big banks, though I'm not sure it's sufficient enough to tame them. Better than nothing though.

  > (e)  To ensure Americans have choices among financial institutions and to guard against excessive market power, the Attorney General, in consultation with the Chairman of the Board of Governors of the Federal Reserve System, the Chairperson of the Board of Directors of the Federal Deposit Insurance Corporation, and the Comptroller of the Currency, is encouraged to review current practices and adopt a plan, not later than 180 days after the date of this order, for the revitalization of merger oversight under the Bank Merger Act and the Bank Holding Company Act of 1956 (Public Law 84-511, 70 Stat. 133, 12 U.S.C. 1841 et seq.) that is in accordance with the factors enumerated in 12 U.S.C. 1828(c) and 1842(c).
  > (t)  The Director of the Consumer Financial Protection Bureau, consistent with the pro-competition objectives stated in section 1021 of the Dodd-Frank Act, is encouraged to consider: