You answered your own question there. It's the 30th Anniversary and you know NECA loves those. Plus couple this with the success of their Dutch figures, it was a no brainer they'd shoot to release a Matrix for the 30th event. I'm sure Hot Toys had a similar idea about the anniversary. I chalk this one up to coincidence. Keep in mind, both companies had to be developing their respective figures for at least a little while.
Also, bonus points for the GIF, which I feel is the way 99% of us will display our Matrix figures.