How did my church become mega? Well, they started in the 1820's and preached God. People grew in the Lord and took what they learned to practice it in their lives. By the 1850's there were enough people joined together, to need a daughter church. (The parent church isn't around anymore. The Daughter church is now a great grandmother church.) The church became part of the community, (if memory serves me, and it doesn't alway, I think they even housed wounded soldiers when the hospitals couldn't fit them all during the Civil War.)
They landed on the conservative side of the fundamentalist-modernist controversy in the 1920's and
Donald Barnhouse became the Teaching Elder. He started some radio show, which seems to have been one of those first radio shows and preached the Bible. (You can even still hear some of his shows.) After him was James Boice, and it kept growing. It kept growing because it maintains its stance on teaching nothing but Bible and does so by starting on Gen. 1:1 and working all the way through to Revelations before returning back to Genesis. And it helps the community by feeding the hungry, (both God's food and fill-your-stomach food), housing homeless, giving clothes to those who need clothes, counseling people with sexual sin, going on college campuses to help the students and staff to know God better, helping the disabled and getting help from the disabled, missionaries around the world, teaching people how to budget, and so much more.
And when enough people from some area around them needs a place closer to home and a place to reach out to a more local community, the spend the time and money to develop another daughter church.
My church has doctors and lawyers. One of our doctors went to DC for a while to be the Surgeon General -- C. Everett Coop. Some of our members start businesses. One you may have heard of even though his stores closed since he died -- John Wanamaker. One of the women in our church is forever struggling with Lyme Disease. She had a service dog for a while, until the dog dies. She wrote a newsletter for Disabled people around the country, so other churches could learn how to start their own disabled grou in their churches. The problem is she is always in great pain, so she writes when she can. Used to be a quarterly newsletter. Now it might come out about once every two years. Do you think she's poor? Nope. Her husband runs the IT department for one of our more famous area hospitals.
Another member was a friend of mine. She's not known for anything famous, but she did amazingly well being a single mom in a wheelchair living on the minimum Social Security gives people who were born disabled. Her daughter got a great education.
And then there is this cool brother I use to love. He's from Beirut Lebanon, until his Catholic family had to leave in a hurry because of a civil war where the instigators decided to kill all the Christians. Somewhere between that little scared boy and the man I knew, he came to know the Lord, moved to America, got a good job analyzing soil before his company built science labs and chemical plants around Philly. I met him when he was one of two Ruling Elders who tried to keep a struggling daughter church going in our section of the city. By then he was just getting to the point of becoming an American citizen and had met and married to love of his life. They had a baby, but lived here they didn't feel safe raising their daughter, so they moved away from the city. Last I heard (which was after they moved away), he was spearheading trying to start another daughter church i my section of the city.
So we have rich, we have poor, we have in-between. We have Republicans, Democrats and probably more than one Libertarian. We have kids, we have old people, and a lot of in-betweens. We have babes in Christ, learned scholars, and a lot of in-between.
What is your problem with "megachurches?" Start a church in 2016 and follow God. If it's not huge by 2200, something went wrong. Someone forgot the focus is on God. People are hungry for God. All they need to is hear the message. God does the rest!