I haven't seen the clubs books...so I dunno, but this year what I do know is that they changed all the seats in the VIP section of Karaiskaki this year, and also changed all the lighting to LED for the pitch. Semedo cost us a few million I think, we also bought Sa, and a couple younger lads.
Running a football club is not something you do to turn a profit, the majority lose money and the owners operate the clubs as a hoby or for status or in Greece maybe other reasons like having your own gang of hired goons, political influence, perhaps money laundering....but if anything Marinakis has put in more money than he has taken out of the club believe me.