Conditions are right for a repeat of the dotcom collapse but, as Chris Blackhurst explains, some big names are less worried about the impact of a crash this time S ome 25 years ago I was shown round a “dotcom incubator”. It was a converted office building in London’s Clerkenwell. On each floor, there were huddles of young people, all dressed in black T-shirts, jeans and Converse, staring earnestly at computers. Each group was plugging a different ecommerce idea. Up on the roof, there was a