I like the idea of everyone using Esperanto as their second language. But there is a problem with incentives. Even the argument of political neutrality has its problems: someone has to be the first to seriously support the language, but at that moment the language would stop being perceived as neutral. (For example, if tomorrow EU would decide to use Esperanto as a neutral common language, and if the plan would actually work well, then people outside EU would see it as the language of EU, not as a neutral one.)
Also, sometimes people don't want to cooperate, but rather to out-compete their neighbors. Learning English or Chinese is more difficult than learning an artificial language -- but if you have already paid the costs of learning them, you have an advantage over your neighbors who got worse education. Making international communication too simple would take away the relative advantage of those who have already invested in the current one.
Also, sometimes people don't want to cooperate, but rather to out-compete their neighbors. Learning English or Chinese is more difficult than learning an artificial language -- but if you have already paid the costs of learning them, you have an advantage over your neighbors who got worse education. Making international communication too simple would take away the relative advantage of those who have already invested in the current one.