Sharing seeds with people in need

In a group on one of the social media platforms I am a member of there was a question about "where to buy seeds for small money". This question brought me back to thoughts I already had a couple of years ago.
Many of us preserve seeds and we always preserve too much. Other people need them due to various reasons, may it be that they are starting their garden, may it be that they were flooded or whatever situation came along.
Up to now I also buy part of my seeds, because I am still building up my garden, now I am going to get 5 varieties of pole beans and 5 of bush beans that were grown in over 700 m and therefore support some more cold weather than the usual beans.
Wouldn't it make sense to have seed banks maintained in many places all over the world where one can apply to receive seeds just paying the postage or even receiving them for free, when there is someone who would pay for the postage? Wouldn't this be a way where people simply start to co-operate and create real-life networks? Wouldn't this be a further step for many to assure self-sufficiency?
One of the big examples for me is Navdanya by Vandada Shiva. She has done great work so far. The only thing I would change is: I would not collect seeds in a central place, because central places generally are more vulnerable. It's like with distributed computing: storing in many places is safer and much cheaper.

Photo from pixabay.