This move has been more than five years in the making.Canopy Growth (CGC -1.71%) has finally done it. After five years, it has found a way to close on its pending acquisition of Acreage Holdings, one of the top multi-state operators (MSOs) in the U.S. cannabis market. But a big caveat comes with the announcement -- it won't actually be able to consolidate Acreage's results due to the federal ban on pot.So what does this really mean for Canopy Growth investors? Here's a look at the key takeaways for investor ...