At least 30 percent of European venture capital firms will disappear over the next three years, according to research from AltAssets, a British research group. While governments continue to encourage investment in fledgling companies, AltAssets said the VC industry was grappling with a hostile environment. It found that 78 percent of the 125 firms it surveyed, which collectively managed about 20 billion euros ($19.6 billlion), expected industry consolidation over the next few years.