Soundcloud went bankrupt in real terms. Spotify is actively attempting to go bankrupt, given the extreme rate of red ink burn and their failure to produce a sustainable business (they're going to end up getting acquired, the licensing business will never produce profit margins).
Skype was sold off to two different US technology giants.
ARM was swallowed up by Japan.
King was eaten by a US company. As was Mojang.
These are all smaller success stories however. They're equivalent to fourth tier US successes, far below the second tier US companies like Adobe, Cisco, Texas Instruments, Airbnb, Priceline.com, Uber, etc.
The parent comment was correct. Europe nearly entirely missed the Internet/Web software business, the mobile software business, the cloud business, and now they're being left far behind in artificial intelligence (save for a few bright spots, such as in Britain, none of which has yielded commercial outcomes of large consequence).
Germany is almost single handedly keeping Europe competitive in the robotics field. And the largest tech company in Europe for the last decade, has been SAP.
Look at this list and compare it to companies like King and Soundcloud:
Apple, Microsoft, Google, Facebook, Amazon, Intel, Cisco, Adobe, Qualcomm, Broadcom, Oracle, Activision Blizzard, Salesforce, Priceline, nVidia, Dell, IBM, VMWare, Texas Instruments, Micron, Analog Devices, Applied Materials, HP Inc, HP Enterprise, Intuit, Uber, Airbnb, Twitter, Snapchat, Pinterest, eBay, PayPal, Stripe, Square, Workday, Western Digital, Electronic Arts, Palantir, AMD, Autodesk, Lam Research, ServiceNow, WeWork, Lyft, Dropbox, Splunk, Marvell Technology, Palo Alto Networks, Fortinet, Microchip Technology Inc, NetApp, Juniper, Seagate, Symantec, VeriSign, Slack, Grubhub
And that's ignoring dozens of other companies in the US tech sector with market caps between $2 billion and $20 billion.