The speed force is a dimension. It chose Wally West as it's avatar, the same as Cyttorak uses Juggernaut, Phoenix uses Jean, etc. Wally "mainlines" from the Speed force, his connection can not be broken due to this despite several attempts to severe the connection. A power that resides in every dimension, every era, every universe is not going to simply be overpowered by even a cosmic being. It's like saying anyone could use the Phoenix force if they wanted to tap into that power. The problem is that the Speedforce is being compared to the Power Cosmic, and since Doctor Doom has made Norrin his bi*ch twice, the assumption is that the same thing could be done to the speedforce. Clever but nothing supports that claim, and people have tried.
First, the speed force is an extra-dimensional energy force; it doesn't "choose" anyone as its avatar. In fact, there are many characters besides the Flash's who rely on the speed force for their speed abilities.
second, do you have scans showing people trying to break Wally's connection to the speed force but failing? Specifically, characters who are high-tier energy manipulators trying but failing to do so?
Third, there have been instances where even other Flash's have been cut off from the speed force. Bart Allen once absorbed the entire speed force during Infinite Crisis in order to fight Superboy-Prime effectively cutting everybody else off from it. Jay Garrick, for example, couldn't use the speed force and had to rely on his metagene powers for speed. And the negative speed force can also negate speed force energy.
Fourth, even if SS couldn't break the connection between Wally and the speed force, as a high-tier energy manipulator he can still negate the speed force energy the same way Captain Cold did by using a field or manipulating the energy itself to make it useless. Like I said, the versatility of the Power Cosmic is quite vast and there are a lot of options available to SS to nullify the energy of the speed force.
Fifth, nobody cares about comparing the speed force to the Power Cosmic. Nobody here claimed that Norrin could steal the speed force, I only claimed Norrin could manipulate it.
First, the speedforce chose Wally as it's output. He then goes on to explain he "mainlines" from it now. I don't have the scan but in the same scan Wally is talking to Linda about his new powers
Second, nope I guess since I don't have the scans anymore it never happened right?
Third, Flashes have been cut off by other Flashes. Wally has done it. Bart Allen is a Flash who absorbed the energy? That has nothing to do with Norrin.
Fourth, He couldn't. Surfers never done anything like that to beings even close to utilizing power that's in every era, dimension and universe... He wouldn't be able to react or think quick enough to utilize his power even if it could work, which you've provided no evidence to support.
Fifth, you're suggesting that the power cosmic gives Norrin the ability to manipulate the speed force. I'm saying he's no more capable of manipulating it than he would be the Phoenix Force or Odin power or Cyttorak's realm's power.... ETC.
I think your idea is a clever take on it. But to agree with it I would have to say that Norrin, who NEVER uses speed in battle (With it I believe he could have whooped Thanos or Thor), would outreact the fastest character in comics not named Zoom, then be immune to the speed steal (he wouldn't be) and would then have to fight someone he could barely see. Cosmic awareness, energy manipulation, ability to amplify his strength to any degree necessary, his supreme power wouldn't matter if he couldn't utilize it. He's been physically knocked around by Thor and Thanos. Ergo, Wally could and should be able to deal with him. IMO.