If you're not as rich and we'll connected as Mark Essien,
this will be your struggles:
1. You build your websites
2. You lack resources to reach customers.
3. You try to make some but well connected people (not Mark, I know him to be a *nice guy) block your ways.
4. Still,
One mistake people make about web companies is they think that people just magically find your product. Building the product is 10% of the work, 90% of the work lies in finding customers. And the website does not help with that.