Actually that's incorrect.  There have been four statewide votes to move the capital and all but one were defeated (Willow), and that was overturned by the voters once they saw the costs.

Alaska already owns everything in Juneau.  Why do we need to buy more facilities that we'll then need to maintain?  Lease modest offices in each representative's district, near their constituents so they can meet face-to-face.  When they have infrequent public meetings, they can rent out space at the University, local schools, libraries etc.