Why don't they make cheep family friendly musicals anymore?

Because they're for the birds!

(Cheep --- get it???)  

 

Your question doesn't really make sense. 

If your complaint is about the costs of producing, there will always be licensing fees so the authors can rightfully be paid, determined by the number of seats in your theatre. But your physical production costs aren't fixed: there are ways to work around expensive sets/costumes/orchestras (unless you're trying to do something like Beauty and the Beast). Companies like MTI also offer resources.

If your complaint is about ticket prices at the amateur level, they've probably been strategically priced to cover the above expenses. But I bet ticket prices are still a steal -- what are they, $25?