Not much at least for now.
The top 3 are pretty ahead in terms of what they have already built out in terms of assets and clients.
They are all built on top of Microsoft libraries but that does not discount the effort the current vendors have put in to create the market as well as the assets on top of them. It will take some time for anyone to catch up – SAP has also started along the same path.
I think the bigger theme is Microsoft using low code across all the Power Automate features. I think that low code is a big trend. “Learn to low code” is the new “learn to code”.
Microsoft is probably testing the waters. It will take some time to catch up. Overall, It is good to know that RPA is getting attention from top tech companies.