How to avoid the exchange manipulating delegates

[liondani]

exchanges could attract more users if they promote that they vote only for charity delegates or something like that 

PS or they promote their own delegate that has a zero payrate so the investors know that depositing on this exchange is good for the bitshares ecosystem
     or much better they have a 100% payrate delegate and commit to their clients that they give them back the coins proportional to their stake on the exchange deposited ...
     

[emski]

Or these exchanges that implement the ability for the users to vote with their deposits will attract more investors.

[puppies]

Ultimately it would be up to the community to remove their funds from the exchange in question.

[ripplexiaoshan]

As we know, the exchange usually hold a big portion of BTSX, probably bigger than 3I. What if they choose delegates based on their interest, instead of community's interest?