Tablets lack the functionalityof a full computer and leave many holes holes that I think a hybrid device like the Microsoft Surface will be able to fill.
This is of course a way to disguise the lackof pinch-to-zoom functionality, but it actually works pretty well as a single-handed operation on a small device anyway.
Because all-in-one application suites can be expensive and lackfunctionality for some critical areas of the business, they are often unappealing to growing businesses.
The Nest is easily worth the money, and I suspect it will become even more worth it as more functionality is added over time, but I was disappointed by the lackof any reporting features.