The auto makers are not afraid of competition from itsy bitsy Tesla.
What they are afraid of in Europe is huge the fines for fixing the emissions tests, the VW dieselgate scandal rocked the auto business. Diesel is the biggest seller in Europe, but no longer. Public anxiety over clean air as health hazard has led to a raft of laws in the pipeline restricting the use of diesel and petrol powered vehicles in cities. Governments in the big markets of Europe and China have made it quite clear where they are going with this and the big auto makers have responded by making huge investments to develop electric vehicles.
I expect the US companies will follow the same path, it seems to be a worldwide trend.
Googles foray into fibre is mainly for their own purposes. They have a lot of datacentres and they want to be in control of the bandwidth between them, they want to own the fibres. That makes sense. All telcos use fibre for the backbone of their networks, it is a very long established technology. In most developed ecomomies its is recognised that the next step is to run fibre to the home. Some countries have made big advances towards this goal, with encouragement from the government. It is a huge long tern investment. The telco business in the US is not as competitive as it should be at a local level. But Google does not show any indication of wanting the dig up the roads and string fibres to every home across the US. The numbers probably don’t add up.
A better example might be selling of prescription drugs in the US. If the regulatory protections that maintain a monopoly by the drug companies are changed to allow imports from Canada or any other country, the market would open up and the prices would fall. But the drug companies will fight very hard to preserve their cash cow.
There are many markets like this. So much easier to make money when you have a monopoly. But it takes innovation at a government level to unblock markets and force them to be competitive. Some companies try to force change in regulation by legal challenges. I expect Uber have quite a formidable legal team.