Soros averaged about $6 million per year (since 2015), according to this report - enough to maintain a few dozen full time cadre, effectively as his employees.
They in turn function as representatives of front groups, that can funnel money from other sources, like Government.
That is how he funded “color revolutions” elsewhere - he provides the seed money for the essential professional organizers, and they sink their roots into a bunch of different Government funding sources, as well as the Left-Wing funding sources in general, for surge or covert operations.
Thanks for the info!