Magento open-source is the license-free version of Magento that offers all the basic features needed to run an E-commerce store, which makes it more accessible for startups and small businesses. If you are planning to launch a new B2C startup online, you should opt for Magento open-source, and when your business needs and budget grows, either get the customization done through additional extension/custom development or upgrade to Magento Commerce/Cloud with custom Magento 2 Maintenance Page.
In case your business wants to serve the evolving needs of your business, then you might need a trusted Magento maintenance company to leverage the ongoing opportunities!
Feel free to contact us at sales@sigmainfo.net for more details on Magento 2 maintenance services for your growing B2C startup.