Any white-box cryptography for asymmetric-key? What is the latest status of white-box cryptography?

Question

I am learning white-box cryptography. So far, I find the following historical research or implementations, for examples:

• Published white-box AES algorithms

E.g., Chow's WB AES and WB DES (2002), WB AES Dual Ciphers (2010), Lai's WB AES (2009), and more papers.

• White-box crypto included challenges

  E.g., NoSuchCon 2013, CHES 2017, and more red/blue team challenges on white-box

• Published cryptoanalysis or tutorials

  E.g., cryptoanalysis on WB AES and DES, WB AES tutorial, NXP's options, and much more.

• Published individual projects on GitHub and another website

After I read this white-box related information, I have these questions:

1. All the white-box crypto are designed on symmetric-key algorithms (AES & DES). Is there any asymmetric-key based white-box algorithms?

2. Many published white-box algorithms had been broken (see my another post). It seems that the white-box is not widely adopted by industries. How white-box could be implemented (aka opportunities) in the real industrial applications? For example, protect secrets hardcoded in the non-free code?

3. What are the latest white-box crypto design/development trends? no matter for academic research or industrial implementation.