Except by the time they see SolidCoin as a threat the people with the most money will be people who share the values of people like you and myself. There is only a limited amount of coins in existence and if they are owned by people with the right values then there is nothing a government can do.
"Most of the money" is irrelevent only concentrations of >1 M ScamCoins matter. If you don't think the government couldn't buy there way into ownership well that is your most grand delusion yet.
Your argument that it makes it less secure than bitcoin is pretty stupid though. You do realize you need both MINING and MONEY to attack SolidCoin.
No you don't. You just need money. He who controls the control nodes owns the network. You changes the block reward from 32 SC to 5 SC. The control nodes enforced that decision. Anyone who refused was using invalid client and thus blocked by the control nodes. What ability did they have to block that change and keep mining 32 SC blocks? None. They could try but without the control node their blocks never became part of the block chain.
If government controls the control node (plural is dubious and obfuscating) they can halt the blockchain by refusing to sign any block as valid except their own. You have completely removed the need for 51% control.
Today you have most (all) of the control money thus have absolute control over the network.
If in the future you have most (all) of the control money you will retain absolute control over the network.
If in the future the govt takes your buyout option and has 51% of the control money they have absolute control over the network.
He who controls the control nodes has absolute and complete control over the network.Your actions in making unliateral changes to the protocol have provided proof of that.