Given that IOTL he wasn't allowed to work on computers for years after the war, unlikely especially given IBM's position even pre-war even within the European market (see their role in computing for the Holocaust...). Zuse did form a company when allowed to in 1949, but was years behind global developments and though he was able to find a niche, eventually the company was sold to Siemens, which apparently eventually sold of that business to a Japanese company. The US was just so far ahead and Germany left in such ruins that it took them quite a while to catch up in R&D especially when so many of their scientists were taken abroad by the victors, their next generation of potential scientists and engineers were beyond decimated, research forbidden for years, and the transistor invented in the US first (technically some German electronics engineers did develop it while working in France about the same time, but two guys weren't able to keep up with Bell Labs, the best electronics R&D center on the face of the earth at the time).