I agree that those are products which to varying degrees compete with parts of AutoDesk&#x27;s product line. To me, Desault Group and Siemens aren&#x27;t really competing as companies with AutoDesk, their core business lies elsewhere, i.e. manufacturing, and their interest in design software seems more of a byproduct of their core interest...e.g. Siemens licenses its parametric modeling technology to other Cad vendors (e.g. Nemetschek).<p>On the other hand PTC is a similarly sized company with a similar strategy of acquisition. It predates Autodesk&#x27;s acquisition strategy and appears to target a different set of customers...hence no webstore. I suppose the analogy I&#x27;d draw is that AutoDesk has products that dominate their market segments in the way PhotoShop dominates its segment. There are competitors for profitable corner cases (in PTC&#x27;s case product life-cycle management solutions), but those aren&#x27;t in the just whip out a credit card and wait for the UPS truck sweet spot.<p>As an aside, my comment mentioned AEC and that&#x27;s a market that Autodesk has clearly shaped and dominated.