Numerous theories exist that if the middle row is blocked off, the LCC's will not be able to compete with legacies, they will have 66% of previous max capacity, and running the same cheap fares. They will have to raise fares to legacy prices, but now they are not a "Low Cost" carrier anymore.

this is not a comment against LCC, just saying if the middle row is blocked/eliminated, it will be hard to compete.

sure, a guy in front, or in back, can recline his seat etc and get into your personal space.

my comments are from a pure "eliminate the middle seat PAX" point of view