I may be wrong, but it seems to me pricing everything at its actual correct price is the best way; do not subsidize consumption or production, do not protect producers. All of these things are firstly political footballs and secondly only act to consume wealth inefficiently (which is to say, to mis-allocate resources).
Then work on making everyone as wealthy as possible, by encouraging economic growth, so we have as much personal, individual wealth as possible, and so can buy as much of what we want or need as possible.
> it seems to me pricing everything at its actual correct price is the best way
It seems to me that the "actual correct price" is the one that doesn't prevent everybody but the rich from being able to experience the art and cultural heritage.
There are many alternatives for dealing with crowds available. It's also just good business since those artistic works are a huge draw for tourists being outside money into Paris and into the country as well.
