Technology accelerator Y Combinator (early investor in Stripe, Dropbox, AirBnB and many more) sent a message to all companies in their portfolio last year. The advice can be adopted for most companies this year as well. Greetings YC Founders, During this week we’ve done office hours with a large number of YC companies. They reached out to ask whether they should change their plans around spending, runway, hiring, and funding rounds based on the current state of public markets. What we’ve told them is that economic downturns often become huge opportunities for the founders who quickly change their mindset, plan…