not bad for a Canadian production

no. none at all. i would even say that it is the opposite. some stories can only be destroyed by further explanation. the thing is, if you take what we know as a given, then it all makes sense and is a quite powerful ending. if you try to explain it, it will just fall apart. reason being, that there can't be a satisfying full explanation. no matter if you chose to explain it through alien intervention, government experiment, act of god ... it will just stop making sense and you lose the impact.

also, in this case the "why?" does not matter ... AT ALL. what does it matter why or who put them into this situation? it is about what we see, about the characters, what they walk through and about human nature.

i give you another exaple, where the writer seems to have had the same opinion: vincenzo natali's "cube". i won't spoil it for you, but it is an open start and open ending movie, which only makes sense the way it is. now, natali actually wrote and directed it with an ending and some hints within the film towards the "reasons" behind it and he removed and burned that film material, once he noticed that the explanation 1) does not matter for the story and 2) actually takes away from what is shown. that's also why the "sequel" and "prequel", who were done by other people and are disapproved by natali are so bad.

quite some films of similar genres actually destroy what they build up by a cheap and unsatisfying ending.

I disagree, but to each their own........

agreed.

I don't disagree, particularly about the conclusion. I thought the same thing.

But, I think the story could have been expanded. Not as a hard sci-fi per se, but more of a drama/thriller.

What if the government/military became aware of him? Or religious zealots?

What happens if Jane dies? Or is incapacitated somehow? Are there others like her who can neutralize him?

Are there others like him, using the power for evil purposes?

An author like Stephen King could have done much, much more with this concept/story. As a Canadian production, it's more likely that limited budget and resources forced them to keep the story limited.