Twitter banned some stuff temporarily the other day, now they upgrade those bans and add some more. Google removes parler from the Play Store today, a different action (not banning trump). Apple didn't ban anything, but is considering it.
These seem like different actions by different companies, responding to the same news.
Also, pedantic as it may be, it's not political action. These companies are not political entities. Just because groups of people communicate about politics on the platform doesn't make them political.
What we are seeing is major internet companies responding to and banning perpetrators of treason and sedition, of domestic terrorism.