If you're exchanging salary for equity you have to look at taking a job at a startup like an investment decision. I don't know what the broader startup stats are now, but 1 in 6 sounds about average. It means you should negotiate down vesting periods and try and spend a few years at each startup before figuring out if it will succeed or not.
My anecdotal opinion is that more startups are cashing out for at least something because of acquihires and low-end mergers. I had a friend whose startup ran out of money, he accepted a few points of another startup in exchange for the assets of his failed startup and that startup that bought his assets ended up selling for $100M+ after less than a year earning him a decent return.
On another note - it would be pretty cool if someone did the equivalent of an index fund but for employee options. Get together with 5-6 of your friends at different startups and exchange options with each other to hedge the risk.
Another way to diversify your exposure is to get advisory roles at startups and pick up 25-100 b.p from 4-5 different companies for helping them out. This has worked out pretty well for myself.
There are some VCs who will also invest a small slice on your behalf if you introduce them to a deal they end up investing in, which can also work out pretty well if you are able to spot good investment deals, know the founders, etc.
For a culture where stock options, M&A and investing is so prevalent there really isn't much information out there in terms of making the right investment decisions and how to handle and work with money.