[markofthew]

> Adding VST3 support to Ardour/Mixbus, we did not experience this as a notable issue at all.

Not as a host; but this was a major stumbling block for more advanced plug-ins like, say, Kontakt. Given that VST3 was based on VST-MA (largely the work of one of the original Studio One authors), which is derived from Steinberg's COM-like interpretation, there were some genuine pain points for plug-in developers.

But I think your point about the framework approach is a reason against having yet another API to spit out. As you say, developers who do make a living out of this, aren't going to be able to dig their heels in and say "it's CLAP or nothing if you want to run my wares." I imagine it would be suicide for smaller developers like Fabfilter or Valhalla. And if CLAP is just another API supported in branch of a framework, where is the "killer application/plug-in" going to come from?

I think VST3 shows how well this is going to be received. Nobody was keen on VST3 from the start, and AFAIK this wasn't to do with philosophical objections to commercial licensing. It was largely due to the fact VST2 worked well enough, was understood, supported, and nobody saw the point in adopting it. The fact Steinberg had to deprecate 2.4 and then announce they were going to end-of-life support for it in their own applications to convince market forces says it all. Even when Doric came out a few years ago, in v1.0 only VST3 was supported. But they quickly backtracked and added whitelist support for VST2 plug-ins.