An API is a valuable cure to the stagnation of growth. Product design at scale becomes optimisation, and innovation is left to 3rd parties.
If you allow API design to stagnate as well the result is paralysis. Unfortunately, it's difficult to avoid.
Fortunately, most people won't notice or care. You'll likely end up confusing this with success.
And you'll continue to successfully raise funds to cake ever more sophisticated layers of makeup onto the same tired and wrinkled face.