Quick financial glance:

Telekom Malaysia
Market capitalisation: ~RM11.6b
Revenue: RM8.9b
Profit/loss: RM673m
Profit/loss margin: 7.5%

Maxis
Market capitalisation: ~RM40.9b
Revenue: RM7.6b
Profit/loss: RM1.6b
Profit/loss margin: 21%

Digi
Market capitalisation: ~RM17.5b
Revenue: RM4.9b
Profit/loss: RM1b
Profit/loss margin: 20.4%

Taken from various sources (sorry for any errors). Financials mostly for year ending 2009. I'm not sure why people are saying TM is still the largest telco, or making the most money. Maxis and Digi are making way more money (profit) and have bigger market capitalisation. Also, doesn't explain why Maxis/Digi isn't investing in faster and cheaper broadband.

I would agree to some extent, especially if this is related to copper-based solutions. But fibre is a whole new game. Maxis have their own Metro-E, some FTTH deployment, etc. As far as I know, there's no exclusivity in deploying fibre.

And, on mobile, why isn't Maxis/Digi/Celcom reducing broadband charges and offering faster (and more stable) speeds? Why are do we have such low mobile quota cap? Maxis caps at 3/6/12GB and Celcom at 5GB monthly.