Or perhaps zero mess, and this is just a good way to acquire all the patents and later they can merge either the companies or the teams behind them to produce what TB envisions. Tha scarier name I saw in their companies' list is BlueCoat. That is some nasty (good nasty) stuff.
I am still (proudly) using the McAfee Antivirus Enterprise edition on my Win Pro machine. It has (imho) the best options/flexibility. I also remember that the respective firewall was also super strong and very versatile but I can't get my hands on any latest version of it (I have the AV legally).
My understanding is that Windows Defender is the only decent engine nowadays, but that's second-hand anecdata I can't measure the bias of (I don't currently use Windows).