Copyright instead of software patents?

One of the classic questions, which came up once more during an in-house inventor training I was giving the other day. In this video I make the case for software patents and explain why copyright does not protect software inventions at all.
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Needless to say that none of this is legal advice, right?

[@matomeamos7275]

Matome here from Patent Business Solutions in South Africa, yes what you are saying is so true.
Copyrights is not enough security for the protection of Software.

[@matomeamos7275]

Greetings.
Matome here from Patent Business Solutions in and from South Africa.
Great video and topic.
Yes, I agree with you, copyright law does not provide enough security for the protection of "software".
It is difficult to pledge Software as collateral for security due to high risk.
The risk can be reduced by applying Patent Law.
Therefore patent law must also be used to protect software.
Thanks

[@mnelson823]

But, for example, a lot of software reuses code that is already written. so if this code is copyrighted, and even if it's not the full code but snippets or portions of the code exactly as it is written is being used by someone else from a copyright code - it would be protected, yes?

[@rorycavanagh5475]

So if company x programs a machine for customer y, does that mean that company x holds the copyright for that code? And what if company z wants to modify that code and use it? Or modify the code to fix it for customer y? Is that allowed?