“I have noted that apparently Highlake could not afford the level of security demanded. My view is that this is not a relevant consideration in relation to considering whether security is required for the protection of revenue or the amount of security. Whether a company is able to trade or not in view of the security requirement or amount is a consequence of the security requirement. The legislation is concerned with protection of revenue. It does not suggest that this objective is intended to be balanced against, or subject to, the objective of enabling the person upon whom the requirement is imposed to continue trading.”