The creation of professional teams, sponsors, and analysts has been a huge boon for the development of eSports as an industry. These teams provide a level of structure and organization that allows eSports to be taken more seriously as a legitimate form of competition. Sponsors provide financial support that allows teams and players to compete at the highest level, while analysts help to provide insights and strategies that can give teams a competitive edge.
Without these entities, the eSports industry would likely be much less developed than it is today. There would be fewer opportunities for players to compete at the highest level, and the industry would be less organized and structured.
If games were played by individual players instead of teams, the industry would likely be quite different. There would be less emphasis on teamwork and more on individual skill, and the strategies and tactics used in competition would be quite different. However, it's important to note that many eSports games are designed specifically for team play, so it's unlikely that individual play would become the norm in the industry.