There is no personality external to the coalition that they can turn to. There is no leader inside the coalition who can replace Berlusconi without starting relentless conflicts,
Berlusconi no longer has the necessary resources, in terms of image and credibility, to turn the situation around, ... he is the glue that keeps the coalition together.
This is another blow to a country that does not have many credible institutions, and that is why this is important. It is another sign of the Italian malaise that is spreading.