Much was written about Fiat-Chrysler's plan to spin off Ferrari today. If mostly care about F1, I say don't worry about the Scuderia, Williams has been a public company for a while now and it does not seem like much has changed there, except that the team has gotten better.
Ferrari still enjoys a "sweetheart " deal in F1. You could argue that, as the only team to continuously contest in the series since the beginning 60 years ago, it deserves it. In any case, Ferrari does not lose money on F1.
It's worth remembering Luca di Montezemolo had a plan to float Ferrari on the Singapore exchange at the turn of the century but FIAT at the time had a more immediate financial needs and the deal never came to pass.
Here is a letter from the new Chairman Sergio Marchionne laying out his case for this move. Judge for yourself.
If the fear is of a Ferrari the could become a ghost brand like Jaguar or Aston Martin, I think there is no need to panic. Maybe Fiat-Chrysler will not be Italian anymore but Ferrari will remain so because it would be nothing without that and it's masters seem to recognize that.