Writing in online pub Medium, venture capitalist Duncan Davidson posits that the era of investing in every little thing may be over. I believe he's spot on.
Davidson left some wiggle room in his piece for VR and IoT funding. although he's far from bullish on either of those two technology categories.
Disclosure,i've written articles on Duncan Davidson's startups and selected at least one of his companies for the former technology launch event, Demo. I am not now and have never been an investor in any of his venture funds.