With all due respect, what on earth are we talking about? If parking is too much, find a cheaper alternative. If tickets are too much, find a cheaper alternative. If food is too much, find a cheaper alternative. How are we this unresourceful?
When I go to games I park at Saz's and take their shuttle which costs you one drink ($5) and you get into and out of the game so much faster than the main parking lot. Eat before the game. Buy your ticket the day of from someone on Ticketmaster who can no longer go.
I haven't paid more than $25 in total to attend a Brewers game in years.
If you want to be sad you can't have a full game day experience of parking at the stadium, sitting in a premium seat, everyone getting a full meal, etc without paying a premium .... then fine. But if you "can't take a family of 4 to a game anymore for less than $300..." unfortunately you are just not great at playing the game. Sorry if that offends.