The only barrier to entry you can create is to consistently build a great product.
It's unfortunate biologically we have to sleep.
In an IT lead world, incumbents generally win because they have the existing relationship with the IT organization.
Your product should sell itself, but that does not mean you don't need salespeople.
When you're doing something you're passionate about, stress becomes a featurenot a bug.
You can keep 'consumer' DNA at the center of your product. That will always mean that adoption is easier.