Comment 4 for bug 1936408

So maybe a better example is this.

Current behavior:

1) Quota for networks is set to 10
2) Project A creates 10 networks
3) Admin changes quota to 5 networks
4) Project B tries to create 10 networks and fails after 5 (good)

Proposed behavior:

1) Quota for networks is set to 10
2) Project A creates 10 networks
3) Admin changes quota to 5 networks, which fails
4) Project B tries to create 10 networks and succeeds (bad)

So now there are two projects with 10 networks instead of just one. So the admin is never able to enforce the new quota of 5 networks until all users reduce to that number, therefore any new project can create 10 networks.