These are societal and philosophical concerns. A child's physical development affects how they interact with society as they grow into adults. Should a pregnant woman be able to negatively affect her child's gestation because she can't wait three or six months to start a business? Additionally, should parents allow themselves to devote their attention to a startup over their children?
In my opinion: Things that only affect her (abortion included) - her business. Things that negatively affect anyone else - her children included - societal, varying on impact.
Your societal impact concerns are not specific to women. The same supposed issue arises in a situation where a male CEO is not present to be a father figure or role model for their child (thus condemning them to an inevitable life of crime and drug abuse... or whatever)
In my opinion: Things that only affect her (abortion included) - her business. Things that negatively affect anyone else - her children included - societal, varying on impact.