If you are a novice in the e-commerce industry then initially you may find it difficult to run a single online store. However, if you are planning to create and run multiple e-commerce stores which are multi-lingual and have many different features & functionalities then you have to spare a lot of time in setting up different shipping options, currencies, settings, etc. It will also require more human resources, time, and money.
But if you are using Magento as your e-commerce development platform then things will get a lot easier. It comes with a complete solution that lets you access multiple features for managing Magento multiple websites so that you can meet all the requirements of your diverse target audience.