Magento 2 possess the following limitations:  It consumes large space in the memory. During heavy processing, it consumes gigabytes of RAM.  As it is written in PHP, it can sometimes be slow in comparison to other platform  Magento 2.0 will not support all Magento 1.x extensions. The extensions must be bought and integrated into Magento 2.  While Magento 2 Enterprise Edition costs money, Magento 2 Community Edition is free. Magento 2 Enterprise Edition is a paid product.  The cost of development for Magento 2 is extremely high for custom development.