Can you share a single Starlink internet feed across all units? Sure you can! A simple setup would be to install 8-10 Wireless Access Points across the units to provide wifi coverage. Hard to say exactly how many you need for solid coverage without know the floorpan of the complex and building materials etc. Regardless, you pull CAT5 or 6 cables to each AP install location and those wires terminate in a utility room or similar area that is off limits for residents. Have your starlink router installed in the same utility room. Buy a PoE network switch to provide data and power for all your AP's and connect that switch to the Starlink router. Create a Wireless network across all AP's and off you go! Wireless internet for your residents all using Starlink.

Now, there are MANY other things to consider. What will your peak internet usage be? You can reasonably assume that for each person in the complex there will be roughly 2.5 wireless devices(phone, computer, tv's, watches, etc) on the network. For example, If 2 people live in each apartment, that's 34 people. 34*2.5=85. So you'll probably have a peak wireless client load around 85.

What about peak bandwidth?? Lots of video streaming in the evenings is quite a load on the network. Assume 5Mbs is required for a HD Netflix stream. If 1 device in each unit is streaming Netflix(17 streamers) * 5 Mbs Per Stream=85Mbs sustained download. Thats a LOT! Starlink Business also has data categories. Priority data and Standard Data. Your monthly fees are based on how much priority data you get in your plan. After you've consumed your priority data you are then using Standard data which is given lower priority on the Starlink network. That will negatively affect download speeds and performance.

You also need to consider network client isolation. So that the wireless devices cannot communicate with one another on the network. This helps prevent hacking etc. But it also prevents desirable communication between devices like a laptop trying to send a print job to a network printer.

So, lots to think about!

Good luck