In 1988, Lucasfilm had just sold off the unit to pay for Skywalker Ranch (which he thought Labyrinth and Howard the Duck were going to do), there WAS no Toy Story, cute shorts were still experimental and time-consuming, and Pixar believed most of its future would be in advertising and technical, since it would take three years at least to get even one movie going...Assuming they were even envisioning a feature two years into Jobs' ownership.
Back then, the Sunoco and Listerine commercials were considered big mainstream money for Pixar:
Anything besides that at that point was experimental, like the hand-mapping that showed up in "Futureworld".