I think the main problem is that if you want to play in the mobile space, you must invest heavily in lawyers: http://bl.ocks.org/mbostock/1153292 http://bl.ock

I think the main problem is that if you want to play in the mobile space, you must invest heavily in lawyers: http://bl.ocks.org/mbostock/1153292 http://bl.ocks.org/mbostock/1153292 http://www.informationisbeautiful.net/2010/whos-suing-whom-in-the-telecoms-trade/ http://www.informationisbeautiful.net/2010/whos-suing-whom-i... It's not the walls that keep people out, it's the sharks.