It's actually pretty sad for the EU that the biggest tech company names on the continent are all Russian.

Not that "largest by market cap" says much, given that it corresponds to "oh look a monopoly" as much as it does "innovation and real growth" (and also "bubble"), but you're wrong.

Market caps of Russian examples from above:

Sber: $84 bn - https://companiesmarketcap.com/sberbank/marketcap/

Yandex: RUB 1327B (~= $17 bn) - https://tradingeconomics.com/yndx:rm:market-capitalization

VK: RUB 176.7B (~= $2.3 bn) - https://smart-lab.ru/q/VKCO/MSFO/market_cap/en/

Ozon: $8.9 bn - https://companiesmarketcap.com/ozon/marketcap/

Market caps of bigger EU tech firms:

  ASML: $533.84 B
  Siemens: $223.14 B
  SAP: $202.96 B
  Seagate Technology: $164.43 B

ASML, SAP, ARM, Spotify, ...

How do you define biggest? Can't be by market cap.

Don’t believe everything you read in Pravda.