nightcraw1er.488: Maybe I miss something in the translation, but a vpn will not magically fix a connection which is lost at the providers end.
Well... technically, it can. If the provider has servers and multiple locations, and the attack only targets one of them.
Take GOG for one example. They rent space at a CDN (probably multiple CDNs, but let's make it simple). The CDN has server farms (each having multiple multi-gigabit connections) at a number of locations around the world, and you normally get routed to the one closest to you. Now, the network should have failsafe and route you to a different location if the one closest to you is down for whatever reason, but maybe the failsafe isn't functional either because it, too, was attacked.
A VPN could help in this case, as you can get the network to route you to one of the farm in Asia instead of the one in Europe where the connection constantly breaks.
Granted, it's a rather rare case, but it could happen.