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why might myanmar have difficulty attracting foreign investments?

Myanmar has a history of recent transgressions against human rights and democracy. For most of its independent development, it was ruled by a military junta. The laws make it hard or impossible for foreigners to do many things, such as own ground. If foreign investors would be approved in Myanmar (which is not at all certain), they would not be sure that their property in Myanmar would be respected and e.g. not confiscated (nationalized).

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.