Free speech does not legally take a back seat to corporate profit on public sidewalks. Sidewalks are traditional public spaces, and a city granting a tech company permission to run delivery robots on them does not strip citizens of their First Amendment rights. You retain full constitutional rights to assemble, hold signs, and protest against those corporations or their bots directly on public land.
The legal friction comes down to the distinction between protected speech and physical obstruction. While holding a sign, chanting, or handing out flyers is protected speech, physically standing in front of a moving robot to block its path gets treated under current law as physical obstruction or disorderly conduct. Municipalities enforce these rules to keep public thoroughfares clear, treating a blocked robot similar to someone physically blocking vehicle traffic or a pedestrian walkway.
In practice, this creates a significant gray area. Even though law enforcement frames these interventions as enforcing basic public safety and traffic flow, critics argue that using police officers to arrest protesters blocking delivery bots effectively turns public law enforcement into an operational buffer for private commercial interests.
Futurism: 78-Year-Old Woman Hauled Off In Handcuffs After Blocking Delivery Robot.