I think ultimately
@David O'Day before you start getting personal as always. The simple fact is, we are the most difficult stadium in the top two divisions to get to via public transport. Other grounds in challenging locations like Reading, Stoke, Southampton and Bristol City all have shuttle services.
Like you say, people aren't doing it because of fear of losing money. Therefore, your only option really in 2023 is to drive or wait for a taxi. If you travel alone, you have to wait for a dreadful bus service which doesn't even take you to the mainline station.
When we play Millwall on a Saturday and Leeds, Birmingham and Leicester and there are inevitable issues because hundreds/thousands of away fans are struggling to get away, they'll maybe revisit plans.
If you've ever travelled on the train to or from Coventry Arena, you'll know just how many people are trying to get to the stadium from Coventry Station.