The ambition of the European Union is to achieve climate neutrality by 2050. Electric vehicle (EV) charging can prove to be part of this transition through the use of smart charging and bidirectional charging (also known as Vehicle-to-Anything or V2X). This paper identifies the most important stakeholders in the smart charging ecosystem and investigates their main drivers and objectives in existing and future EV markets. Through this investigation, support for core EU principles, such as a free and fair market based on consumer protection, is bolstered. The analysis shows that stakeholders face a multitude of barriers ranging from economic, to societal, to political. The first section aims to illustrate the overall system architecture of smart charging services, by formulating various roles and business perspectives within different EV related markets. The second section is dedicated to the requirements for the scale-up of smart charging for a number of involved stakeholders by assessing their needs, value cases, and barriers. The third section formulates a preliminary outline of integral requirements on interoperability, communication, and cybersecurity.