Already there...
Quote:
If I want to provide Apple laptop customers with a power supply for their laptops that won''t risk burning their house down, how do I do that? I can't. Apple (justifiably) patent the MagSafe adaptor but (unjustifiably) will not license it to third parties.
Solution:
3rd party MagSage adaptor.
http://www.amazon.co.uk/Replacement-MagSafe-magnetic-Macbook-Compatible/dp/B0036BGK2M/ref=sr_1_3?ie=UTF8&qid=1311715206&sr=8-3
Works great (there's one plugged into my MacBook right now).