Why there is no takeover for Christian Sewing

However, investors give Deutsche Bank a higher company value on the stock exchange than Commerzbank: Deutsche Bank has 24.5 billion euros, Commerzbank 13.3 billion euros. Couldn’t one major Frankfurt bank swallow the other? There were similar considerations years ago.
I also think that is unlikely. Such a takeover initially causes massive integration costs, for example for the reduction of employees. Mergers often enable companies to reduce their expenses in the medium to long term. But to do this, among other things, the IT systems would have to be integrated – which causes enormous costs. Added to this is the complexity: Commerzbank already had to go through IT integration when it took over Dresdner Bank during the financial crisis. Commerzbank was busy with this for a long time. And last year, Deutsche Bank merged the IT of its subsidiary Postbank with its own systems – with the well-known, disastrous consequences. There is also a third reason that speaks against a merger between Deutsche Bank and Commerzbank: Because numerous, especially German, companies are customers of both institutions, the companies would withdraw business from the merged bank. This would be a precautionary measure, especially for medium-sized and larger companies that want to avoid concentrating their banking relationships.