I thought that bucket shops pay dividends... Can you point out one bucket shop that do not pay dividends?
Then it's not a bucketshop, as far as user is concerned, it's a passthru, regardless of whether it's held or not - there is no difference to be told from the outside.
Usually one has to wait for large dividend which the bucketeer cannot cover from his profits, and at that moment they're exposed.
They cannot provide voting rights because if they do, they can expose themselves to the regulators.
That's why "even", but don't oversimplify, there are bearer instruments ...