One issue that I see a lot of is "Ubuntu is great! Everyone should use Ubuntu!!! It has a long term support plan etc etc." If one asks them "Do you pay for that Support?" I get back 90% of the time "Oh no.. they give it away for free!" which is nice, but only a short time outlook. A capitalistic/social commons needs a larger percentage of the people paying for its upkeep to maintain itself.
Unless you are paying Canonical, and convincing other Ubuntu users to pay for LTS.. you will not see it last. The reason LTS exists is because Shuttleworth is paying for people to work on fixing old crap. When Shuttleworth runs out of money (which depending on how much he had invested in the Stock Market/Icelandic banks could be pretty quick).. the free ride is over and people will have to find someone else to fix the stuff because most developers don't like trying to figure out if some 5 year old program can be fixed against some new style of attack.
So my main statement is if you are for Ubuntu. PAY FOR IT if you want to PROMOTE IT so it will be there 10 years from now.