Also, their marketing in the US sucked. David P. and his pals were much more effective at it over on the other side of the pond. 
...AND many Americans could afford Color Classic type Mac, Quadra etc. or PowerPC Macs in early nineties that were sold for ~$2,000+. Also many, many Universities could buy boat loads of Mac for schools. Nobody wanted to buy Amiga. What about games? People could afford PCs capable to run games. So, US market was "to small" for Amiga.
Also in 1994, there were PowerPC Mac, and Amiga was nowhere there and later... I'm putting my A1200 into E/box case

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