I doubt this will happen.
It will only cost more money if you let it.
Who said that a cord cutter has to subscribe to every service all the time? Just subscribe for a few months, watch what you want to watch, then cancel for a few months. Many times, the streaming services have a free trial, so you might end up getting your first month free when you re-subscribe.
If a person cuts the cord, then get 10 different streaming services at the same time, then it is their own fault if they end up paying more than a cable bill.
True. But the way it is going, you are looking at a service per show. Not that bad obviously, but Netflix for House of Cards and Stranger Things (among others), Hulu if you want say Handmaids Tale, HBO for GoT, Disney for kids stuff, Marvel for MCU shows, ESPN for sports. It won't take a ton of these at $10-15 per month (ESPN could easily be $20) before you are back to cable-like bills. Plus the cost of internet without bundling and with data caps.
I get what you are saying. I just think the reality is that these companies think they have figured out a solution, and that is fragmentation with their own "great" content. Having said that, I think fragmentation will be their undoing. I think they overestimate people's appetite for TV, especially those under 30.