Why can't Ford have the same quality as Toyota does? What are they doing wrong?

I have to drive and maintain a Ford for work. Constant wiring, fuel pump relay, gaskets, water pump, and other issues.

Many Toyotas are problem free other than maintenance.

How does this happen?

I owed a Toyota once, it died at about 80000 miles.
Now the old 78 Ford pick up truck does need a new fuel pump, but with over 300,000 miles on it, that doesn't seem to me to be that bad.
The little Ranger that is it's stable mate is a few years younger and while the fuel gauge isn't working, with it being over twenty years old- it doesn't bother me.
So I don't know why you think Toyota products are better!
I honestly don't know of any one who owns vehicles made by Toyota that have lasted as long as my fords have and those who own Toyota's seem to have more problems with their trucks then I do with my Fords.
By the way if you study quality control, you would find that Toyota used to use the "Ford" quality control program as a basis for their own. After GM bought into Toyota in all honesty the quality control program at Toyota suffered. It is just now getting back to realizing that quality is built in and to depend on warranty work is not conducive to having happy customers.

What kind of Ford is it? What year? Is it used? If so, the previous owner didn't do a good job. Ford are known for reliability.

Any vehicle can be a problem. I've found it has more to do with how the car is driven than who manufactured it. We have many vehicles where I work and all have had some problems. None any more than others. Right now we have an employee who yanks on everything and all our vehicles have had door handle problems.

You must have gotten a lemon, my ford has had NO problems. Just change oil/filter and drive it.

The worst car I have had for issues was a Toyota.
2 brake recalls
It left me stranded 3 times. Twice with electrical issues and once losing gear selection.
That cost a lot of money and 8 hours labour to fix
It was properly serviced and maintained

Hi cost and quality of the build. My last Toyota land cruiser cost was 70 k GBP as it was stating to fail at 8 years old I now have a Ford galaxy 2017 this costs with all the extras 38 k GBP so it does not have the quality in the build.

Ford have improved in last decade and at one stage were very much equal with Toyota and others for reliability. It did have quality control issues and still suffers from its buying 'cheapest ' part from suppliers. Since you often can't have cake and eat it its often a balance between high cost of quality parts and good quality control and price it can see for on open market. In a way its the Ford buyers that set the bar.
since most simply want a cheap car with lots of goodies. And change often. That drives the company supplying cars to deliver what customer demands.