I grew sweet corn just once here in AZ. In the first year of my final garden expansion I had about a 10' X 10' space that was a mix of 50:50 native soil and semi-composted horse manure. Sweet corn does well in a high nitrogen soil, which was why I chose it to be the first crop in that section of garden--lots of other stuff would likely have burned in the soil conditions at the time. I planted the corn in rows 12" apart with each stalk of corn just a few inches apart and it was all on a drip system. As it grew I mulched it well. You'll need to treat it with Bt so the stalks survive the cutworms early on and then later again, as it flowers, to deal with the corn worms. It did spectacularly well, in fact, I have been forbidden from ever growing it again. There was about a three week period where we had so much corn we were having it with every meal. We froze a lot too. Now we just appreciate it as a seasonal treat.
Pollination was not an issue for me, nearly every ear was sufficiently fertilized, even the corn in the corners. So, I think you can get away with much fewer plants in a smaller area if they are sufficiently dense enough. While it seems like the sweet corn from a plant is endless, most stalks will produce only one or two ears. Some hybrids will produce three if sufficient resources are available.