Well, for the whole dispute on developing an economy ...
My solution is this:
If you want the buildings, then build them.
Being a camper myself, I started off with Basketball Courts and Ice Cream Shops as well. My courts are both at level 10 now and I still have them both to this day. Do they take up a boatload of space? Yes. Are they the most effective buildings in my hood? Heaven's no. But I like them, and right now I enjoy having the double 10 buildings at the front of my hood. That's not to say that they might not get removed one day, but if I like them now, I'm keeping them. Plain and simple.
I thoroughly appreciate economic analysis, but it should really boil down to finding what you enjoy, and building an economy that works best for you. Your actual in-game play-time and collection cycles should be one of the biggest factors considered.
If you're not a very active player, then focusing on building up your Laundromat's is going to pretty much be a waste in the long run. You'll maybe collect them 2-3 times a day, far from being a worthwhile investment (Although they are excellent to initially get you going). Similarly speaking, if you're only able to collect on your Italian Restaurants once per day, then you're missing out on most of their benefits.
For people who only log in once or twice a day, I would strongly disagree with developing hoods that focus on buildings that produce cash quickly. Now you can use those buildings at first to help get the financial ball rolling, but don't really focus on developing them past anything reasonable (Perhaps level 4-7). You really won't be using them at all once you get your collection cycles running. Anything that generates cash in under 8-12 hours is pretty much going to be sitting in your hood all day, going uncollected. For any player, I would suggest looking at how many times you can realistically collect a building each day, and then focusing primarily on building up those buildings that will be the most effective for you.
For a newer player who is only on once or twice a day, having all of your 12/24/48 buildings built up is a much better focus. So Basketball Courts, Houses, Pawn Shops, Tattoo Parlors, Gun Shops, etc., should be the primary focus, with faster-producing buildings being the "secondary" upgrades as you get the chance (Ice Cream Shops, Laundromats, Italian Restaurants, etc).
Then you basically just keep up that routine until you can buy your first Movie Theater. Once you hit this point your MT upgrades become your primary focus. Everything else becomes secondary. Rinse and repeat until you can buy your first Loft. Same thing happens again until you can get your first Nightclub. And once you get your first Nightclub ... Well, by then cash won't even be a problem anymore ;)