Why sometime it is important for companies to have indoor solutions instead of virtualization (to get outsource) ?

It is important for the companies to have the in-door solutions because of the following points:

1. When Security is important. (If you need a highly secure environment, including Physical security)

2. When you need some highly customized solution according to your organization's requirements.

3. When Issue resolution time is most critical.

But your organization should have in house experts in order to do that... 

It is important for companies to have internal solutions rather than the default (for outsourcing) in order to speed solution sites being implemented by problems when rely on external sources to solve their problems find themselves at a time there is a problem what the site relates to the external source to solve and this connection exhorted1 War Source outside to find out the problem to be solved study takes time and this time affect the delivery of location