How do you get parents to care?

You know, I am absolutely amazed at how hard it is for people to catch the vision of teaching their child to read before kindergarten.
Don't they care about giving their kids the ability to take the opportunities that will come their way?
Don't they care about helping their children become their best selves?
Don't they realize that IQ is only 50% genetic? The other half is the home environment and mental stimulation, especially between the ages of 2-5 years old.
I am doing everything I can to try to help as many kids as possible out there, with the least amount of time and money required by mom and dad.
I wish people could understand how important early reading is! I wish they understood how simple the Godfrey Method is!
I wish I could get them to see the importance of my picture-letters to young minds.
The foster mom in me wants to scoop up all children and help them myself, but they learn best from their own mom and dad.
Where are the proactive, purposeful parents?
Please tell me the homeschoolers aren't the only ones who get it!