Amtrak (where it exists) is often deprioritized for freight travel, and other times is often limited to extremely low speeds, resulting in extremely slow travel. Your road trips are only possible if you have extremely relaxed time constraints and specific destinations in mind.

Fees are also very high for such a slow option.

As for the future, well... it is bleak. This administration is actively trying to block transit expansion, presumably due to their undying affection for the fossil fuel industry, going so far as to withhold funding from already awarded grants to regional rail.

So while the northeast can sort-of pull it off due to its relatively compact nature and history of more progressive policies, this leaves the vast majority of the country in a no-mans land.

Amtrak simply leases the lines in the West from freight providers rather than owning the track outright. The reason Amtrak can offer so much better service in the Northeast Corridor is because they own the track. Incidentally the NEC is the only part of Amtrak operating at a profit.

It's better if trains prioritize freight travel and car-focused roads prioritize passenger travel, than the other way around. Human beings have more pressing time constraints than nearly all shippable physical goods.