It's actually quite simple:
If I buy a piece of HW, I buy a piece of HW. It's my piece of HW and nooneelses !
Same goes for SW.
Sure I might be forced to click through some "terms of use aggreement", but clicking that one doesn't mean I've agreed with those terms but just that I've aggreed that I must click that gadget to make use of what I've bought....
Or in short : EULA my ......
I Sony sells HW at a loss and was somehow expecting to make up for it by SW-sales..... well thats their prob surely not mine.
And as such I've have the right to do ANY modifications to HW and SW (*) I've bought.
Just for the record:
The only Sony product I own (apart from music CDs that is) is a fat PS/2, still factory sealed. Just because I'm too lazy to mod that old chick doesn't mean I wouldn't have the rights to...
(*) I might consider hacking a light version to a full version as ethical questionable but thats really where it ends