Zec won't fork, at least for Batch1. Bitmain's already paid them. Thats why if you look at the price point of the Z9 batch 1 it started immediately at $2000 compared to the E3's initial price at $800. They couldn't buy Ethereum. It actually says about the dev teams. Ethereum is incorruptible, but Zec is a shitload of money hungry sluts.
You make some pretty good points.