Trade company ranking and investment possibilities

I saw there were already a lot of interesting ideas about trade companies/marketplace.

A feature which would complement the ability to rename companies and to invest in them would be to release on a regular basis (like every ten turns on normal pace) a ranking for the companies of the different players, which would only be available for player having access to the marketplace.

For investment, it should be possible for a player to invest in the companies of another empire after having unlocked a diplomatic tech. It would give her/him access to a fraction of the ressources the company is selling. The players could also be able to withdraw their companies from the market to lead a more protectionist policy, thus preventing other players to invest in them.

The drawback for players choosing to make their companies available for investment would be that the more there are investment, the higher the risk for an economical crisis (which can already be triggered in game) will be. An estimation of the risk of a financial crisis would be stipulated on the company ranking report. The player could have access to a better estimation of the risk by making a market analysis (which would cost research points).