You may want to tone shape on your bass, but if you want to refine tone shaping you may use the graphic eq, and if that doesn't quite get you the sound you want, then a parametric eq will get a more narrow q to surgically shape the tone.
If none of these work well enough for you, there are all kinds of different eq pedals.
Companies are smart to cash in on people who aren't satisfied with their sound, so they create options, which all come with an ever increasing price tag.
Back in the old days a bass amp didn't have much in the way of tone.
It's like buying a car, some come with back up cameras and onstar... Many people don't feel they need all that and opt for something more plain... whatever floats your boat, you can be sure that someone has a boat floater!