Question for any franchise owners

I’m not an expert but my sister has owned a few and now deals in commercial real estate related almost exclusively with franchises. My perspective is they’re a huge mixed bag. Some are excellent ways to get started with great support from the franchiser and then you expand and own 3 or four locations and can make some serious money. I know a few guys who own sonics (they don’t check knuckles) and all of them say after the 2nd one you can really make bank. Others don’t do much more than want your money without support except a tiny advertising kick every once in a while. Each deal is different.