Hello,
We'd need a way to differenciate telecoms. (you can MP me if needed i'm a network expert in an internationnal company for 20 years). for now only price help users to choose
Maybe a home user oriantation and a business oriantation.
I imagine something like QoL of cities for telecom (most of them based on R&D, training and investment):
- 2G/3G/4G/5G coverage (why not ISDN, PSTN, or X25 for old ones). We could invest in infrastructures for each of them (today we have only 1 global slider). like this we can specialize. Of course devices must be compatible (my old motorola phone bought in 1996 can't connect 5G, i'm angry LOL). with time users will use less 3G and more 4G, so infrastructures become obsoletes with time. Remerber that we talk about billions here

- service availability (SLAs) (user can be agree to pay more if connection is reliable)
- costumer support quality (do you like to wait 7 hours to get a pakistan holiner that can't help you at all? or do you prefer to have an instant hotliner with IT skill and speak your native language?).
- bandwidth available (good to have 4G everywhere, but useless if your core network is saturted), remember that users wants more and more bandwidth (maybe select costing by bandwidth)
- sevice availability (for exemple VoD or with own internet company, or with peering to another companie with fees), maybe rent a TV adapter for VoD like modern boxes
- is there integration with phone manufacturers (remember blackberry?) My company offer you 20% cashback if you buy my smartphone 5000.
- offer a VPN to secure your datas
- add the costing of the usage. remember when your paid 0.50 c for 1 text message? Amazing! All providers don't support unlimited communication or data. A simulation should reflect this.
- how to interconnect users of different providers? if verizon phone user want to phone to and orange phone user? what is the cost for provider? and for the user? how to garantee quality?
- add options like QoS, parental control, mail maybe (or add a new company for mails), low latency (for gamers or voice), firewalling, SD-WAN to make extra cash.
- maybe add new techs and production to build 3G/4G antennas, high speed switchs, routers ,etc
business options would be interesting to study :
- MPLS
- internet redondancy
- managed firewalls/VPNs or SD-WAN
- Mobile device management to manage all the phones of your company
- NoC or SoC etc
I think that we should consider nation population and not city population to make it viable

(a telecom company should be able to build it's network in all cities but should have the choice, i mean not a global slider but one per city as i'd invest more on a city with lot of computer/phones users than on one with few users

Allow to build network between towns on world map (with high costs to motivate inter-provider peering contracts)
That's just first ideas but we could work them
