If you were in the zebra stripes you were in the gore not in regular vehicular traffic lanes. You were not acting like a vehicle driver, and so should not have expected to be treated like one. In any case, the driver coming from the right in his own lane had no obligation to yield to you.
As you continue west, the stripes separating the gore converge into one solid stripe. You should stay left of that stripe until it becomes dashed. Just prior to getting to that point, start looking back over your right shoulder and signaling if you need to negotiate, but the traffic merging in has the ROW. If they yield to you, great, move in. If not, let them go and negotiate with the next guy. That's how it works.