I don't know if removing software emulation is to lower the price. I think it's to encourage playing PS3 games over PS2 games.
Nobody buys a PS3 as a PS2 upscaling machine, unless s/he is freaking rich, or have 200 retail PS2 games in the house
and yet Sony thinks people aren't buying PS3 games just because they're busy with playing PS2 ones.
I got 60GB U.S. version thinking it would be the last model with EE+GS chip, I was kinda right (For Sony may revive it when BD drive production cost dramatically decrease) but honestly I played only 5 PS2 games, and have or used to have 12 PS3 games (selling some atm)
That ratio doesn't justify the existnece of PS2 chip =/
40GB ver. + used modded PS2 is cheaper than 80GB ver. + buying used PS2 games of your region only.
Strangely, removing software emulation might boost PS2 sales, or used PS2 sales. Just a thought, I'm not an ANALyst.