I used to wonder why those movies I watched had bad sound 
lol!
The impression I got some time ago is that a person would in the future be able to flip the switch and stake from their own node, I think some of the reason that it will become possible is through the network allowing a fair chance for all staking and then after a node fails to meet its obligation it is then removed from being eligible to be selected - how that looks I do not know but its surely something to consider how it may be done,maybe when slot leader is selected the network can run a test on the node to determine whether or not it will fulfill its obligation and then allow fair chance to all interested in staking at all times.
Imo every ada user that stakes will be contributing to the network whether they run a node or not, it just looks different cause they will be financially contributing if they stake through pool instead of contributing with hardware.
It is going to be interesting to see how spread out the network is when Shelley comes
@ZCryt0Knight shared an article here HODLer's Guide: What Will Crypto Look Like In The Future? - #5 by anon20038177 I bring it up cause the article puts an emphasis on looking at things from outside the box, and the P2P designs can surely be built on top of to further this space.