Yes but the importer isn't just bringin in one or 2 items like the end consumer. Importers are bringing in Containers and freighters full of product, that's why they pay the GST, big difference between Joe Bloggs bringing in one fishing reel worth $300 compared to the importer bringing in 10,000 of the same reel worth 3 mill.
IMO it won't go far, just the extra manpower and paperwork costs will far outweigh the extra billion dollars of GST.
Gerry Harvey is just a greedy old man set in his ways who instead of changing his business is content to lump it on the Govt. so the Govt look like the bad guys.
Just as an example though, i recently imported a camelbak for fishing, with enough storgae to fit tools and a few boxes of lures. locally, even Online aussie stores, I could not find it cheaper than $250, look it up in the US, and delivered, less than $100 so even with GST on top, i still would have saved over 50%