"If we succeed in fighting corporate control in these areas we will also be destroying the economic system that is feeding climate change..."
I think not, Mr Scrivener. The capitalist economic system has been around for 500 years or so. It'll take much more than what your analysis advocates to destroy "the economic system" which serves - or rips off, if you will - most of the economies of every nation.
Now ... if the 99%, en mass, decided to withdraw all their cash from every bank on the planet in 48 hours, then the system would be stressed to the point failure. However, Pyrrhic victories are self-defeating.
The only possible approach, Mr Scrivener, is to attack the concentration of wealth by dumping the global share-holder system, and replace it with a broad, stake-holder regime. Trouble is, that'll never get past the goal line, for obvious reasons - not the least of which is: it would take the rest of this century to do it.