I think that's because it's not that hard to write your own physics action:

Code:

action phys_obj
{
	ph_setgravity(vector);
	phent_settype(my,PH_TYPE,ph_type);
	phent_setmass(my,m,ph_type);
	phent_setfriction(my,f);
	phent_setelasticity(my,b,min);
	phent_setdamping(my,l,a);
}


and btw, A7 does have full physics with every edition.

Code:
void main()
{
    cout << "I am MrCode,";
    cout << "hear me roar!";
    system("PAUSE");
}