What if... tax(short term investment)=60% & tax(very long term investment)=10%

There are lots of debates going on about taxing the crap out of everyone and everything. I'm wondering what if the tax on short term investments were very high, like 60%. and it dropped by 2.5% every quarter down to 10% after 5 years. Would hedge funds just move to foreign countries? Would smart & greedy Wall St. types be more motivated to build companies that create value & jobs? Would executives be motivated to create longer term value? What do you think?