"The questions are straight forward and to the point."
"ideal world" = imaginary world
"a say" = telling your neighbor he's a bad person? punching your neighbor in the face? forcing him to wait until you get there so that you can pollute together? voting on a law of questionable specificity? Burning his house down and killing his cat?
"your air and drinking water" = not "your" air and drinking water
"your neighbor" = my neighbor? another country? an imaginary ideal neighbor
"pollute" = fails to specify how or in what way or for what reason.... campfire with their kids? pooping on your lawn? Deliberate massive CO2 emission?
"government intervention" = legislation? police home invasion? military control? fines? jail time? lobotomy?
I think I have to say in the most straight and to the point way possible...
Probably Yes and Probably No.
"Hey neighbor... could you not poop on my lawn?"
Ideal World "Sure friend, no worries."
Ideal Government: "Yeah, that seems about right."