When they first came in they did invest, Dann and Fox straight away, Gunnar, Eastwood, Clingan, Best (paid unpaid fees) etc. there's nearly 3m in 2 windows, and that isn't all of them.
I mentioned PH4 because of the nature of your post, you portrayed SISU as being unique in this, there's no denying SISU want the club and RICOH to make profit, these hedge funds are slaves to money, but, capitalists are in general, slaves to money, and to suggest that PH4 wouldn't have the same overall intentions is naive at best, stupid at worst - take your pick.
What's this plan of defrauding the taxpayer? The only party to defraud the taxpayer is the council, who bailed out ACL with £14m in times of austerity, I wouldn't condone it in times of prosperity, a completely unjustified waste of TP's money!
The club has been in steep decline since relegation from the premiership, if it weren't for SISU in the first place, we would've been in this mess 5 years before, with hindsight it was probably better SISU didn't come, but you couldn't guarantee then we couldn't do a Pompey, so have they created the situation? Not entirely, it was already there.