SIA has been in the business for a while, they have a great concept but unless big corporations such as google want to switch to that model I don't think they can get the customers they need
Wrong. When google switches to this concept (they won't, because they will lose the power over the data - which is necessary for their business), it is to late for sia. Sia is the big sketch against google & co, because sia gives you full control over your data without abusing it for profit (or other things, which we don't - and maybe won't know...).