For the last 10 years or so, everything went up: stocks, bonds, property, cryptos, alternatives, precious metals. Now it feels like a regime change. It’s not so much that things have fallen in the last few months – the EuroStoxx 50 is down by a manageable 14 per cent since January – it’s that everything is falling at the same time.  Stocks are down around the world. Government and corporate bonds. Cryptos. Gold. Fancy watches. It’s not normal for everything to sell off together. Now, there are signs from the US, where the number of new homes sold fell 17 per…