T-Mobile to begin throttling speeds after 5GB cap is reached

Looks like T-Mobile is joining the ranks of other mobile carriers by imposing a 5GB cap on data starting October 16th, this is down from the original 10GB cap. On top of this, if you do go over the cap, you'll receive a text message of the overage and that your speeds will now be reduced, at least until your next billing cycle.
This will only have an effect on less than 1% of customers, according to T-Mobile and it is sitll better than AT&Ts 2GB cap.
Still, data caps and throttling speeds look to be the new norm as our phones keep getting more and more powerful (e.g. HD7, Dell Venue Pro)--sort of the exact oppposite of what we want and expect as paying customers. On the other hand, which is better: throttling speeds or charging money for each MB of going over your data plan (like Sprint, AT&T, etc)?
via T-MoNews
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Daniel Rubino is the Editor-in-chief of Windows Central. He is also the head reviewer, podcast co-host, and analyst. He has been covering Microsoft since 2007 when this site was called WMExperts (and later Windows Phone Central). His interests include Windows, laptops, next-gen computing, and wearable tech. He has reviewed laptops for over 10 years and is particularly fond of 2-in-1 convertibles, Arm64 processors, new form factors, and thin-and-light PCs. Before all this tech stuff, he worked on a Ph.D. in linguistics, performed polysomnographs in NYC, and was a motion-picture operator for 17 years.