When there are doubts about an airline's finances, especially if there could be some dodgy dealings, this is never good for an airline. Debonair comes to mind! How are Volareweb doing at the moment, and how significant is the investment?
I see one of the big problems for Volareweb being that outside of Italy, they don't have a very strong brand - unlike Ryanair & EasyJet who are household names, and many people looking for a bargain flight will check these airlines first. The Volareweb brand needs to be much more aggressively marketed.
To be the #3 no-frills airline in Europe, they're going to have to expand beyond Italy. It's a great place to be based, and they're doing what EZY & FR have done in the UK, but they need to establish point-to-point routes & bases across Europe to become a serious third contender. Before Go was purchased by EasyJet, they were seriously seen as the third major competitor, who after the four bases established in the UK, (STN/BRS/EMA/"Scotland") were saying their next base would be outside of their "home" market of the UK. The Go brand was strong internationally, well liked product & always an aggressive competitor - which Volareweb don't seem to be, judging from their entrance into the LTN market.