"Oxfam blamed rising inequality on aggressive wage restraint, tax dodging and the squeezing of producers by companies, adding that businesses were too focused on delivering ever-higher returns to wealthy owners and top executives."
Under capitalism businesses must constantly expand or be beaten our by their competitors, which are expanding their capital. This means they must constantly put as much effort into increasing profits as possible, so that they can expand faster. This means those that are not focused on those ever-higher returns will simply cease to exist.
"“While one in nine people on the planet will go to bed hungry tonight, a small handful of billionaires have so much wealth they would need several lifetimes to spend it. The fact that a super-rich elite are able to prosper at the expense of the rest of us at home and overseas shows how warped our economy has become.”"
There is something most people tend to miss here. The economy is based off of how the people organize themselves. The workers have all of the power of society, all that is happening is they are allowing this inequality to exist.