amazon business account closed

Amazon closed my many business accounts. They gave below mentioned reason:-

Hello, We will be removing your organisation from Amazon Business as we have determined that your usage of Amazon Business does not fit with the services we provide. In 48 hours, you will no longer be able to make purchases using your business user account. Shortly thereafter, your business user account will be converted to a personal Amazon.com account. You will be able to use this account as a consumer, but you will no longer be able to access Amazon Business benefits. You can view our Amazon Business Accounts Terms and Conditions here: https://business.amazon.in/abredir/gp/help/customer/display.html/?ie=UTF8&nodeId=202117700 All other user accounts associated with your Business Account will also be converted to personal accounts. If you open a new Amazon Business account, it will be closed. Your current open orders will be fulfilled. Your organisational order history will not be available once we remove your organisation from Amazon Business. We suggest you download the order history if you wish to keep it. Our Customer Service and Sales teams can only confirm that we sent this message and help you with technical issues. They cannot reverse this decision or share more details on this matter. For any questions, please email b2b-accountescalations@amazon.in. Sincerely, Account Specialist Amazon Business Talked with my other friends too. Many of their business ac also closed.
Can anyone tell me why Amazon is doing so?