They should.
Depends on how you qualify it, if you mean as a huge seller depends on pricing. I'd say probably yes if you consider interface and the PC as part of it.
In terms of creating game software that's appealing to a wider demographic... maybe. I think it's probably going to be both easier and harder to do than they are expecting. Easier in the sense that it requires less resources, and harder in the sense that they haven't really made a lot of these games recently very well.
The removal of the chip part is both a positive and a negative. It's positive because it drops cost, and negative because you then can't make it as compatible as before with games that were being developed. I'd say it tends to create a bigger split between casual and hardcore audiences, which may or may not be a problem.
But as with anything we know so little about and has been so controlled in terms of impressions and preview info, it's quite up in the air and nothing is set in stone.