Here in Lithuania it's mostly due to customer demand - customers want for open source systems that could be easily modified, would work "just like the old site did", finding developers would be cheap/easy and if launching and hosting site is cheap too, it's all the better.
When you write down all the demands, there aren't much options left. Drupal and Opencart are used, but WordPress is used for 90% of the sites mostly due to demand/requirements.
When you write down all the demands, there aren't much options left. Drupal and Opencart are used, but WordPress is used for 90% of the sites mostly due to demand/requirements.