I don't think this is true. There were massive investments into the Ticino regional rail network over the last 10-20 years, partially driven by the NEAT extension, which shortened travel times between regional centers (Lugano - Locarno - Bellinzona) dramatically.
What doesn't seem to work well are interconnections with neighboring Italy, but that is likely not due to underinvestment on the Swiss side. Road traffic is therefore still a huge issue in Ticino, as many Italian workers cross the border twice per day by car due to the lack of adequate public transport options.
What doesn't seem to work well are interconnections with neighboring Italy, but that is likely not due to underinvestment on the Swiss side. Road traffic is therefore still a huge issue in Ticino, as many Italian workers cross the border twice per day by car due to the lack of adequate public transport options.