What are the major root causes for the surge in Germany? Low humidity/temperature? New variants? Something else? IIRC last winter in the US at least, health officials and the media were quick to blame irresponsible citizens and social gatherings – but the major root cause seemed to be a new, more transmissible (delta) variant.
Another factor is that the German government tried to keep infection rates low at all times, leading to very little natural immunity in the population compared to other countries.
Beside that we can vaccinate a multiple of the number of newly infected people per day just fine. It's been about people being unwilling to get the shot, not availability of vaccines for quite a while now. Example: one day of vaccinations like yesterday (~1 Mio) [0] equals two weeks of new infections at levels like today (>73000).
[1] https://experience.arcgis.com/experience/478220a4c454480e823...