Big Data means any activity susceptible of algorithmic treatment will be automated.
This will include many things currently called “my job”, as is always the case when technology joins business.
In a few years, a business will be an ensemble of self-configuring, product-and-service-generating processes that can act on the market and react to it in a (mostly) autonomous way.
And no, business minds are still not ready for this.
The above also holds if you are in Marketing, only more so.