Zcash’s governance structure is basically the same as Bitcoin’s governance structure. What is Bitcoin governance? | Get Started with Bitcoin.com
These polls aren’t votes. They are simply a means for us developers to seek to understand the sentiment of various constituent groups rather than attempting to use more subjective measures.
As developers, ECC, Shielded Labs and ZF are using them to make their own independent assessments, but are working together on behalf of the community.
If they disagree, they or others, could chose to fork.