Oh WOW,
It would be maintained as long as it's possible to, you can see the situation of the balance left at any given moment!...
...
For this to work We Need LARGE support level...
I don't think you understand the word 'guarantee'.
You cannot 'guarantee' something that might not work.
Note you say "it would be maintained as long as possible" - this is not the same the as "guarantee it will be maintained".
Note that you claim there will be 'guaranteed' support in the original post and that the wall 'will' move up over time.
Exactly! It would be Guaranteed if there are large enough reserves to support it, and force-increase the minimum value over time.
As long as we can maintain support-reserves it's pretty much guaranteed as we would be the biggest holders of the Funds and could control the market easily.