Groucho:
Like how Telecom stubbornly insisted on an analogue mobile network despite their only local competitor Bell South (and the rest of the world) was digital? 'You need to roam overseas? Sure, here's a totally different handset and something called a "SIM card" that will never catch on'.
If you mean DAMPS - that was not their fault, there was no GSM 850 at the time since that was a USA/AU/NZ only band for analog, so they only had the choice of gear for the mess that was the USA at the time to replace the analog network with that would run alongside it. Govt said no to them having some 900MHz to go GSM. Silly Govt crippled them with DAMPS and then CDMA networks because of the band plan.