No, because, given a minimum of 127 volume levels, raising the top volume level 10db will almost certainly incentivate the player to lessen the average (and lower) velocities to produce a proper mf and p, respectively. This results in more dynamic range, and a better controlled piano technique into the bargain.
Firstly, there is no such thing as "the top volume level" because the volume control (which MacMacMac suggested turning up) is a global control and applies to everything in the entire output signal equally. It does not selectively apply to only the "top half" or "uppermost" range of dynamics, if that's what you mean - to do that you would need an upwards expander for dynamics modification (much like a compressor with ratio less that 1:1) with it's threshold set in the middle of the dynamic range. Simply changing "volume" does not affect "dynamic range". They are different commodities by definition.
If you mean the "max volume" has increased, yes, but the dynamic range difference in dB between softest note instrument can produce, and loudest note instrument can produce, has not widened.
Secondly, even if the pianist accommodates their playing technique somehow to compensate for an instrument's poor / limited dynamic range, there has been no actual change in the dynamic range that instrument offers. It still has the same dynamic range it had before.
Turning the volume up and playing more softly most definitely does NOT produce a "better controlled piano technique" either, because you'd then be squeezing (compressing) all your playing expression down into a smaller range of MIDI velocities! By definition, the greatest control over piano expression happens when the performer can fully exploit the whole available MIDI velocity range of 127 values. If you're deliberately trying to short-change yourself by boosting the volume and only playing through about half the MIDI velocity range (maybe 64 values), you are LOSING not increasing your audible dynamic range from the instrument, and also losing finer degrees of variation and expression available throughout your playing. You gain no advantage, in fact you're making fine controlled performance nuances more difficult for yourself.
If you want to increase dynamic range, it's easy... because almost all modern software piano VSTs offer a dedicated control for it. You can obviously adjust the volume as well, along with dynamic range, to get a comfortable listening experience, but you shouldn't go adjusting volume knob only hoping to get more (or less) dynamic range, any more than you should go adjusting dynamic range knob to boost overall volume of everything louder or quieter. That's not the right way to use those controls.
In Galaxy II Bosendorfer / Steinway / Bluthner Baby Grand / Vintage D there is a dedicated knob in the Anatomy section called "Dynamic" (and called "Dynamic Range" in Grandeur / Maverick / Gentleman which also use the same underlying engine) In all cases the factory default centre is probably the best sounding position anyway, as Uli Baronowsky has done a very good job of mapping the samples authentically.
In Synthogy Ivory, there is also a dedicated knob called Dynamic Range. I'd say approx 42dB to 45dB is the sweetspot for most Ivory pianos.
In Garritan CFX the "Dynamic Range" knob is under the Advanced tab - and approx 70% sounds about nice on headphones.
UVI Ravenscroft has "Dynamics" knob defaulting to 96.0% but increasing to 100% seems to benefit most things.
VSL Vienna Synchron CFX has the "Dynamic" knob prominent on the main screen and 100% default is already pretty good.
Pianoteq has "Dynamics" slider just above the pedals, going all the way from 1dB to 100dB which extends far beyond what is realistic for a piano.
In many cases piano software VSTs are actually capable of rendering far more than enough dB difference between the softest pppp note to the loudest ffff note to even exceed the real life instrument dynamics if you push their settings to extremes, so should be easily capable of getting within the sweetspot of realism if you perhaps need to tweak the factory default setting just a little when you're happy with your reproduction volume, and velocity curves, etc. Put your speakers and computer setup next to a real wooden piano and compare side by side.