Software gives more profit over hardware since they have little cost associated with selling more.

Who is "they" in this prior sentence?
Software
Lorenze took his son to the hospital because he fell off his bike and hurt his leg.

Who is "he" in this prior sentence?
his son
The construction company could not rezone the area due to endangered butterflies since they could not violate state law and endanger a species.

Who is "they" in this prior sentence?
The construction company