I think we're talking at cross purposes. I'll try and expand on what I said:
With my business hat on, as Director of IT for my organisation, I don't buy any software product that doesn't come with support. The reason being that we have a multitude of different machines in use, any of which can and often does exhibit strange issues on occasion depending on the mix of applications and usage. It's amazing what can catch machines out. We therefore need an escalation route in order to resolve issues quickly, including remote access by the software vendor if necessary. The other issue that's not well understood by end users is that software must have a central update management system, which collects new updates and issues them to all the client machines. This prevents some 300 machines all trying to update their AV and other software directly, clogging up our internet bandwidth.
With my home user hat on, none of these things matter. I can use MSE with confidence and could switch to something else at a moment's notice. If things go wrong, then there's only me to blame and me to resolve it.
I hope that clarifies?