Yes, they very probably have made a truck load of cash so far.
Not saying this is the case - forum police, reasonable people and SISU-friendly narks might be listening in - but just for a moment imagine this scenario:
You invest little or no money in players over a number of years, making silly claims about bringing on the youth and academy players as the excuse for doing so. You sell virtually anyone you can sell (and remember, we sold quite a lot of good players for good money), and if you cannot sell them, you let the higher earners "leave" on frees by deliberately mis-managing their contract renewals. You get half a million a year for nothing for the academy your predecessors built up. You have sponsorship, season tickets, merchandise, opposition fans etc. etc.
With each year that goes by, the cost of the squad and the cost of supporting a football club gets less and less, and when relegation inevitably happens, you have the success of another significant drop in outgoings because as you now play at a lower level you can again get rid of most of those expensive "championship-quality" players that got the club relegated and get in yet more dirt cheap and young Div 1 players and your costs are probably now around break even, especially as in cash terms you have been paying zero rent for a long, long time.
Every year, your non-footballing group companies charge the entity that is the football club earning all of these many, many millions of actual, real cash huge amounts of interest and management fees. This procedure creates huge sums of "created" intercompany debt in the footballing entity that is actually earning all the cash. All of the excess cash - year in and year out - is paid out in to the non-footballing group companies, but still leaving tens of millions of artificially created intercompany debt that will prevent anyone else buying your nice little cash cow should some nasty person try to put you into administration just because you did not pay them contractually agreed rent.
I am an accountant, and I tell you that what I describe is unfortunately legal and is done all the time in those countries that allow such intercompany management fees and interests to be charged. The UK allows this, most countries do not. Hence the offshore ownership and the UK base for performing these sorts of activities. While I am not saying that SISU would stoop to such abusive - though legal - tactics, if they had, and if they had been doing it from day one, then I would imagine that, YES, they have in fact made a truck load of cash so far.
The trouble with being reasonable is that sometimes you are so busy being reasonable that you don't see the obvious, and if you did actually finally see the obvious, you are so busy being reasonable that you refuse to accept it without an impossible level of evidence, and if someone then provided you with the demanded evidence, you would still find reasons to deny it.
This is my problem with you so-called reasonable people. For a vast majority of the fans, it is quite clear what is going on and who is to blame. For the very small minority of you that are so busy being reasonable that you will not see the woods for the trees, your wake up call will eventually come with the final destruction of our club as we know it by these SISU scum. I use the word "scum" deliberately as that is my personal opinion of what they are.