The sad truth of browsers is that most people use whatever comes on their machine. A lot of times that would be IE - lots of people I know/companies in the UK still use IE out of a lack of knowing any better. Some more savvy users will use Chrome/FF but that's because they realise it has a lot of benefits over IE or are shamed into not using IE.
This doesn't really offer any 'wow' features that entice me as a web developer to try it, so your average user is even less likely to try it. And really, when making a browser, your target needs to be the masses because otherwise no web dev is going to support your browser if it requires even the tiniest of special treatment in their code.