Slavery was once legal everywhere until it wasn't. It became illegal in some parts of the country but eventually it became illegal everywhere. Now we can look back and think how obvious it is that slavery is wrong.
Murdering the unborn was once legal everywhere until it wasn't. It became illegal in some parts of the country and will eventually become illegal everywhere. One day we will look back and think how obvious it is that murdering the unborn is wrong.
You're missing the point. The transition from legal slavery to illegal slavery was not a smooth one. Consensus did not magically arise. People did not simply relent to legal authorities. There was a massively bloody Civil War fought over it. Regardless of what you think about how "One day we will look back" (and note how Confederate pride is still a thing today), you can't expect this to be like an ordinary legal issue. The transition is extremely divisive, and there will be resistance. Nobody could be neutral during the Civil War, and it's going to be difficult for corporations to remain neutral now, when they want pro-choice people to use their services. Abortion is legal in the headquarter state of the big tech companies, and those companies employ many pro-choice workers.