Thank you very much for your comment and your encouraging words. It's true that some users might exchange the steem back into fiat but even if only a small percentage keeps the money in steem it would be a plus.
I imagine also to create a fund with a percentage of the revenue as a kind of saveguard against insolvency of networks. This fund would be kept 100% in steem. Like that I could guarantee that at least this percentage of the revenue would remain in steem.