They have both built their businesses into empires. They are good at empire building. From horoscope perspective, they both belong to a water sign and were both born in the year of the Goat, a Chinese Zodiac sign that belongs to the fourth trine. If all other factors are not taken into consideration, people who belong to the four trine in Chinese Zodiac, especially people born in the year of the Goat, are most kind to others, most accommodating, and so can put up with the most, take up the most challenges, and carry out the longest fights. Belonging to a water sign helps business in ways that I have mentioned in other posts: avoiding confrontation, speedy execuation, etc. But why not a fire sign? Although people of both water signs and fire signs are passionate about their pursues, so much so that they would do anything to achieve their goals, people of fire signs are too much into self protection to have good business and work relationships with their business partners and workers. And building the right relationships with business partners and workers are critically important to business empire building.
I think building a business empire is different from fighting a battle or running a political campaign. Fighting battles or running political campaigns requires short term but fierce fights. And that is what people of second trine are better at. By the way, Martha Stewart may be as famous as Bill Gates and Steve Jobs, her business empire is nowhere near those of Bill Gates and Steve Jobs.