It is the intent of the Legislature that, in construing this chapter, due consideration and great weight be given to the interpretations of the federal courts relating to comparable federal antitrust statutes. In particular, the failure to include in this chapter the substantive provisions of s. 3 of the Clayton Act, 15 U.S.C. s. 14, shall not be deemed in any way to limit the scope of s. 542.18 or s. 542.19.