If by "this space" you mean RPA, then no. RPA platforms integrate with the target app's UI. Zapier (which typically is considered IPaaS, not RPA) integrates with the target app's API. It provides it's own UI to facilitate this, but it doesn't integrate with the target app's UI layer.

Companies will always confuse these terms as they fight the marketing wars. UIPath, for instance, refers to any RPA solution that includes API integration as "end-to-end RPA". But the substantive difference between RPA and IPaaS is whether or not the API or the UI is the point of integration.

Certainly, I believe any of those API "middleware" tooling should be treated as the "new" RPA. IFTTT, Zapier, MuleSoft, Appian, etc