you realy underestimate hero deus ex machina; you seem to forgot something my friends that ..
we have Reality warper like Wanda Maximoff or Negasonic how hard it is to ask them to turn Cloud into Terrigen Crystall.
we have teleporter like Magic, Blink, lockaw they can teleport the cloud to the Moon.
We have weather manipulation like
Storm, Thor how hard it to ask them to bring the CLoud to desolate area.
We have active scientist hero Like T'Chala, Tony Stark, Moon Girl, Forge ask them to find solution.
and other Tech lying around in garage. Pym have a tech to build Door to anywhere if you read fear it self you can see how pym build a door with Skyscrapper, X-men could ask Wasp or Jocasta to borrow it..
there is a lot heroes that could solve this Terrigen Cloud if X-men or Inhuman bother to ask them for help. tell 2 weeks saturation point to Hero community and baam 2 day later the Problem solve