They are not as big as in US, but exists.<p>Most important, is the nature of Europe - it is densely populated, and all largest countries are separated by mountains or big water.<p>Because of this natural divide, Europe has not unified culture, non unified business regulations, and much less space to grow.<p>You could consider, US is 300 millions unified culture, and EU 500 millions, but divided to 3-4 most powerful cultures and tens smaller.<p>So when in US could be one very large company, in EU will be at least 4 different sub-companies for each large culture.<p>And unfortunately, Internet is business of largest possible scale, need large unified environment.<p>Example, how made films in EU in 1960s. Typically, films where made by international companies, and very normal was, when in one scene heroes speak on three languages, and than made dubbing to each country, where film exported.<p>- Hollywood that time already made direct sound tracks, without dubbing. And this was cheaper an faster.<p>And many languages is not only such difference, there are lot others, each add some costs.<p>Second important difference, most interest European countries are very densely populated, and land prices are high, but in least interest is not easy to make big data-center, because uncomfortable regulations.<p>Mean, not easy to find customers in for example, France, but place dc with their data in for example, Hungary.<p>So in Europe exists large gap for companies want to grow from small, like google at start, to big cloud, like current cloud companies.