There is such a wealth of stupidity in there that it's daunting to even touch bits of it.
Competitive forces are the only factor keeping the price as low as it is, a single provider would be forced to substantially increase fares because it would have no reason to run as close to the margin of loss as competitors do now. Service was better and more available 'back in the day' when tickets were cheaper because (1) in those days the wages were much lower, including the minimum wage, so more service could be provided, which relates to (2) the ticket prices adjusted for inflation were insanely expensive back then compared to current prices.
One is tempted to point out how well nationalization has worked for Amtrack but there are fundamental differences. In the case of Amtrack, the public transportation is a necessary service and a capability which as a matter of prudence is worth maintaining at some minimal level (as it indeed provides, minimally), but the level free market demand made it no longer economically viable for the private sector railroad companies to maintain, particularly in competition with private autos running on publicly-funded highways and airlines operating out of publicly-funded air terminals. Airlines are a completely different case as there is plenty of demand, it's simply the fuel and labor costs that make profitable private sector operation stressful...a situation totally different from that which gave rise to Amtrack.