Quite interesting thoughts! I d see not that much of a reason out the largest accounts to be exchanges, @eossocal has provided a real in-depth look at that, with the outcome that the top 100 accounts hold 37% of tokens, so a real different picture. But I am sceptic as well if they will stick to the rules. Huobi and bfx have announced they will support voting, but to my understanding this would require them to provide their customers with one wallet each, didn't see that so far. On the other hand there are major exchanges like Binance, that have stayed quite, will they just not vote or use votes in their own interest. Wouldn't be a great thing having a huge arbitration case right at the mainchain launch....