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If one could provide for every need would be amazing but data storage is a very broad area with technogly varying that even further.

There are many demographics such as finance, big data, consumer to name a few, with advancements in technology increasing the diversity and requiring more specialization.

Having multiples in the same area would only hasten the development and innovation due to competition and i dont think they would damage each other rather the current big players.

yeah you got an interresting point :D