Yes.

Web Components are in use by:

The Amazon 'A' logo

Amazon

The Apple logo

Apple

The GitHub logo

GitHub

The multi-colored Google logo

Google

The Microsoft logo

Microsoft

The Adobe logo

Adobe

The Alaska Airlines logo

Alaska Airlines

The BBVA logo

BBVA

The Blizzard Entertainment logo

Blizzard

The BYU logo

BYU

The Comcast logo

Comcast

The Electronic Arts logo

EA

The ESRI logo

ESRI

The Ford logo

Ford Motors

The GE logo

GE

The GitLab logo

GitLab

The General Motors logo

General Motors

The GuideCom logo

GuideCom

The IBM logo

IBM

The Infragistics logo

Infragistics

The ING Bank logo

ING

The Internet Archive logo

The Internet Archive

The Ionic logo

Ionic

The NASA logo

NASA

The Netlify logo

Netlify

The Nintendo gray logo

Nintendo

The Penn State logo

Penn State

The RedHat logo

RedHat

The Salesforce logo

Salesforce

The SAP logo

SAP

The SpaceX logo

SpaceX

The Ubisoft logo

Ubisoft

The Vaadin logo

Vaadin