Different types of LAN have different things connected to them.
A home router is insecure in a business environment would probably be a better way to describe it. Business kit - like perhaps a PBX or an FTP server or a payments portal - requires such a level of sophistication in setting up things like firewall rules that someone who doesn't do it for a living can only get it wrong.
The home kit has a fairly simple set of pre-defined rules set up that will work in most cases for most people, with some minor configuration possible by the user. The business kit is endlessly configurable to meet the needs of the business and services using it.
I might use a £10 padlock to secure the little shed in my garden with a few tools in it. I wouldn't use the same lock to secure my business premises. Equally my business premise security wouldn't be affordable at home. Products are secure or not depending on the context in which they're used.
Biting the hand that feeds IT
