Europe has minted a new generation of tech millions after some notable IPOs and acquisitions. These wealthy founders are now re-investing their earnings back into the continent's tech ecosystem. Private wealth has doubled from $33 trillion in 2008 to $70 trillion in 2018 with some 92% of respondents saying they now invest in venture capital, according to a survey by London-based fund Talis Capital. Money committed to VC now outstrips real estate among ultra-high net worth individuals as they hunt for yield outside of traditional assets. Click here for more BI Prime stories.