It seems to me, Hey You, that you are the one guilty of ignorant misunderstanding. Yes, costs are an issue, but what makes you think the change in capacity is ENTIRELY down to the horrendous costs? A big part of the cost increase which had nothing to do with the change to 800s was the departure of all of the fag company sponsors.
A raft of cost cutting measures have already been introduced: less practice, less testing, less engines, less tyres, no active suspension, no launch control, no fancy metal composites, blah, blah, blah...
The fuel limit is only one litre less than was allowed for the 990s in 2006, and is confirmed as remaining for the 1000s & 800s (24 litres will be allowed for privateers). Traction control has not been mentioned yet, but is unlikely to be taken away as the MSMA want it.
That's it. It's not simple.