Thank you for the feedback!
“Out of about 15 tries, I only proceeded beyond two years once” This is definitely not the experience we had during playtests. Either you were struck by extreme bad luck, or you haven’t got the hang of it yet. In the playthrough video, I survive 10 years with the seed lezchnt3x2a, which is somewhat lucky, so you might want to try it. (And you can compare decisions if you still run into difficulties.)
I haven’t specified the assumptions being exploited because that could act as a spoiler. (They concern the strategy, there is no hidden/misleading rule.)
The goal is to rule as long as you can, and you can’t do it indefinitely, so in this sense, the player is indeed destined to lose. :)
Edit: I’ve managed to survive 6 years without tending the fields at all, which means it is possible to survive 6 years with any random seed. (Of course, one can achieve better results with farming.)