To ground share would be disastrous to the club, nearly 1400 season ticket holders wouldn’t all be able to travel and non season ticket holders wouldn’t go out of their way to either.
I don’t think people always realise how important the force of habit is for keeping people going to games. Break that and you will soon see a drop-off. Fans are creatures of habit, their routines are important, whether it’s where they drink pre- or post-match, where they park, when they head out to the game. Change that and you can easily see people find other ways to spend their Saturdays.