What church are you talking about Maluchatchful? Neither catholics nor CofE have bank accounts full of cash.
In both denominations they have fewer and fewer cleryman, that they have difficulty paying, the biggest problem being pensions. Both denominations are shedding churches. Even Bishops palace's have been disposed off in the big sell-off and bishops live in far more modest homes.let alone all those Rectories and vicarages they have been selling off for over 50 years
Yes, the value of their churches is great, especially when on prime sites. Should the Archbishop of Canterbury sell off Westminster Abbey and Lambeth Palace as development land? They would probably be quite glad to do so. I was recently in Ripon Cathedral, They had a big notice saying that it cost £1,500 a day to maintain it. I think Westminster abbey costs many millions to run.
At times CofE in particular have tried to sell off important artworks, where they have them. An example is the Zurbaran paintings at Aukland Castle in Darlington. There was such a shindig raised over lost heritage, they hastily with drew the plans.
Remember each parish in both denominations is responsible for the upkeep of the parish church and in the case of catholics, providing the priest's salary.
So, what riches?