There already is a standard charger in the US, CCS. All fast chargers installed in the last few years have been either Tesla or CCS. All non-Tesla models introduces in the last several years have had CCS faster chargers. Early on Nissan was promoting CHADEMO but that plug type is now deprecated in the US. There are still also J772 level 2 chargers for low speed charging such as at your house, but all vehicles support that as well.

It is true that other markets have their own standards, China and Japan for instance but the number of cars moved between markets is very small.

In Europe, Tesla has switched to CCS. In the US, Tesla has committed to letting CCS cars charge on its network. The CCS network in the US is growing quickly and is in the same general size as Teslas. Thing are coming together.

Except that CCS in US is not the same things as CCS in Europe.

Why should tesla be forced to open their network? They had the foresight to build it out ahead of time. I think it would be better to incentivize other networks to do better and compete with tesla.

Doesn't matter; Tesla has already said they would, and started the pilot program a couple of months ago. (not in the US yet however)

https://www.tesla.com/support/non-tesla-supercharging

But to answer your bigger point: others networks aren't incentivized yet to push harder to compete. The demand just isn't there yet. For EVs to be successful in the US, there needs to be more than one successful company. This is a goal that is bigger than capitalism, and sometimes you have to work at odds with capitalism to accomplish those kind of goals.

There's already more than one successful company, see vw & ea. Tesla only opened their network in europe where they have the same plug experimentally. In the us it looked like they might open their network by putting dual charging plugs at superchargers if they were getting money from the bbb, but that money seems remote now. If telsa started building ccs charging networks in the us that were about the same as tesla superchargers except with that plug, they'd crush the competition because they charge market rates for their electricity and fix them when they are broken - this is beyond the capability the vw-owned electrify america.

Why should gas stations be forced to open their networks? Why should AT&T home internet let you sign up for Comcast or Google Fiber? Why should Verizon let you take a device you bought through them to T-Mobile? Why should Edge let you download Firefox?

I'll give you a few options: consumer choice, freedom, interoperability, less physical waste?