Thankfully, most devs aren't the one making purchasing decisions in B2B. I haven't seen any change in the build vs buy equation for real businesses tbqh, and in B2B, those are the customers you want to target anyways, not the indie devs who think they can build Dropbox in a weekend. In B2C, I can definitely see this being true, but I have very little experience there so anything I say here is more on gut-feeling than anything else. But I have over 10 years of experience in B2B, and I've never seen businesses more eager to buy, to free teams up to work on the things they're experts at -- myself included.

Build a good product and they will come.